Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedo ...

is a country situated in

Southeast Europe Southeast Europe or Southeastern Europe (SEE) is a geographical subregion of Europe, consisting primarily of the Balkans. Sovereign states and territories that are included in the region are Albania, Bosnia and Herzegovina, Bulgaria, Croatia (a ...

that occupies the eastern quarter of the Balkan peninsula, being the largest country within its geographic boundaries. It is bordering

Romania Romania ( ; ro, România ) is a country located at the crossroads of Central, Eastern, and Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, Serbia to the southwest, Moldova to the east, and ...

to the north,

Serbia Serbia (, ; Serbian: , , ), officially the Republic of Serbia (Serbian: , , ), is a landlocked country in Southeastern and Central Europe, situated at the crossroads of the Pannonian Basin and the Balkans. It shares land borders with Hungar ...

and

North Macedonia North Macedonia, ; sq, Maqedonia e Veriut, (Macedonia before February 2019), officially the Republic of North Macedonia,, is a country in Southeast Europe. It gained independence in 1991 as one of the successor states of Yugoslavia. It ...

to the west,

Greece Greece,, or , romanized: ', officially the Hellenic Republic, is a country in Southeast Europe. It is situated on the southern tip of the Balkans, and is located at the crossroads of Europe, Asia, and Africa. Greece shares land borders ...

and

Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a transcontinental country located mainly on the Anatolian Peninsula in Western Asia, with a small portion on the Balkan Peninsula in ...

to the south, and the

Black Sea The Black Sea is a marginal mediterranean sea of the Atlantic Ocean lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bounded by Bulgaria, Georgia, Rom ...

to the east. The northern border with Romania follows the river

Danube The Danube ( ; ) is a river that was once a long-standing frontier of the Roman Empire and today connects 10 European countries, running through their territories or being a border. Originating in Germany, the Danube flows southeast for , p ...

until the city of Silistra. The land area of Bulgaria is (), slightly larger than that of

Cuba Cuba ( , ), officially the Republic of Cuba ( es, República de Cuba, links=no ), is an island country comprising the island of Cuba, as well as Isla de la Juventud and several minor archipelagos. Cuba is located where the northern Caribbea ...

Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...

or the U.S. state of

Tennessee Tennessee ( , ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. It is bordered by Kentucky to th ...

. Considering its relatively compact territorial size and shape, Bulgaria has a great variety of topographical features. Even within small parts of the country, the land may be divided into plains, plateaus, hills, mountains, basins, gorges, and deep river valleys. The geographic center of Bulgaria is located in Uzana. Bulgaria features notable diversity with the landscape ranging from the snow-capped peaks in Rila,

Pirin , photo=Pirin-mountains-Bansko.jpg , photo_caption=Pirin scenery in winter , country= Bulgaria, , parent= , geology= granite, gneiss, marble, limestone , area_km2=2585 , range_coordinates = , length_km=80 , length_orientation= north-s ...

and the Balkan Mountains to the mild and sunny Black Sea coast and southernmost valleys; from the typically

continental Continental may refer to: Places * Continent, the major landmasses of Earth * Continental, Arizona, a small community in Pima County, Arizona, US * Continental, Ohio, a small town in Putnam County, US Arts and entertainment * ''Continental'' ( ...

Danubian Plain (ancient Moesia) in the north to the strong Mediterranean climatic influence in the valleys of Macedonia and in the lowlands in the southernmost of

Thrace Thrace (; el, Θράκη, Thráki; bg, Тракия, Trakiya; tr, Trakya) or Thrake is a geographical and historical region in Southeast Europe, now split among Bulgaria, Greece, and Turkey, which is bounded by the Balkan Mountains to ...

, the lowest parts of the

Upper Thracian Plain The Upper Thracian Plain ( bg, Горнотракийска низина, ''Gornotrakiyska nizina'') constitutes the northern part of the historical region of Thrace. It is located in southern Bulgaria, between Sredna Gora mountains to the north ...

, along the

Maritsa Maritsa or Maritza ( bg, Марица ), also known as Meriç ( tr, Meriç ) and Evros ( ell, Έβρος ), is a river that runs through the Balkans in Southeast Europe. With a length of ,Bulgarian Black Sea Coast The Bulgarian Black Sea Coast (), also known as the Bulgarian Riviera, covers the entire eastern bound of Bulgaria stretching from the Romanian Black Sea resorts in the north to European Turkey in the south, along 378 km of coast ...

. Most of the country is situated within the

humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freezing ...

region, with

Alpine climate Alpine climate is the typical weather (climate) for elevations above the tree line, where trees fail to grow due to cold. This climate is also referred to as a mountain climate or highland climate. Definition There are multiple definitions o ...

in the highest mountains and subtropical climate in the southernmost regions. The country has a dense river network but with the notable exception of the river Danube, rivers are mostly short and with low water flow. The average annual precipitation is 670 mm; the rainfall is lower in the lowlands and higher in the mountains. The driest region is Dobrudzha in the north-eastern part of the Danubian Plain (450 mm), while the highest rainfall has been measured in the upper valley of the river

Ogosta The Ogosta ( bg, Огоста , Latin: ''Augusta''), is the largest river in Northwestern Bulgaria, a right tributary of the Danube. It originates at Chiprovska Mountain, 2,168 meters high section of the Western Balkan Mountains, at about an altitu ...

in the western Balkan Mountains (2293 mm). Bulgaria has substantial land in agriculture and forest. In 2006

land use Land use involves the management and modification of natural environment or wilderness into built environment such as settlements and semi-natural habitats such as arable fields, pastures, and managed woods. Land use by humans has a long ...

and land cover was 5% intensive human use, 52% agriculture including pasture, 31% forest, 11% woodland-shrub, grassland, and non-vegetated, and 1% water.

Phytogeographically Phytogeography (from Greek φυτόν, ''phytón'' = "plant" and γεωγραφία, ''geographía'' = "geography" meaning also distribution) or botanical geography is the branch of biogeography that is concerned with the geographic distribution o ...

, Bulgaria straddles the Illyrian and

Euxinia Euxinia or euxinic conditions occur when water is both anoxic and sulfidic. This means that there is no oxygen (O2) and a raised level of free hydrogen sulfide (H2S). Euxinic bodies of water are frequently strongly stratified, have an oxic, highly ...

n provinces of the

Circumboreal Region The Circumboreal Region in phytogeography is a floristic region within the Holarctic Kingdom in Eurasia and North America, as delineated by such geobotanists as Josias Braun-Blanquet and Armen Takhtajan. It is the largest floristic region i ...

within the

Boreal Kingdom The Boreal Kingdom or Holarctic Kingdom (Holarctis) is a floristic kingdom identified by botanist Ronald Good (and later by Armen Takhtajan), which includes the temperate to Arctic portions of North America and Eurasia. Its flora is inherit ...

. The country falls within six terrestrial

ecoregion An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of ...

s of the

Palearctic realm The Palearctic or Palaearctic is the largest of the eight biogeographic realms of the Earth. It stretches across all of Eurasia north of the foothills of the Himalayas, and North Africa. The realm consists of several bioregions: the Euro-Sib ...

: Balkan mixed forests (main),

Rodope montane mixed forests The Rodope montane mixed forests is a terrestrial ecoregion of Europe defined by the WWF. It belongs in the temperate broadleaf and mixed forests biome and the Palearctic realm. Geography The Rodope mountane mixed forests cover the higher parts ...

(main in the mountains), Euxine-Colchic deciduous forests,

Aegean and Western Turkey sclerophyllous and mixed forests The Aegean and Western Turkey sclerophyllous and mixed forests is an ecoregion in the lands around the Aegean Sea. The ecoregion covers most of mainland Greece, the Greek Aegean Islands (except for Crete), the western coast of Turkey, the southe ...

East European forest steppe The East European forest steppe ecoregion (WWF ID: PA0419) is a patchwork of broadleaf forest stands and grasslands (steppe) that stretches 2,100 km across eastern Europe from the Ural Mountains in Ural, through Povolzhye, Central Russia to the m ...

and

Pontic–Caspian steppe The Pontic–Caspian steppe, formed by the Caspian steppe and the Pontic steppe, is the steppeland stretching from the northern shores of the Black Sea (the Pontus Euxinus of antiquity) to the northern area around the Caspian Sea. It extend ...

Boundaries and territory

The borders of Bulgaria have a total length of 2,245 km; of them 1,181 km are land boundary and 686 km are formed by rivers. The coastline is 378 km. The northern border with

is 609 km. Most of the frontier (470 km) is formed by the river Danube from the mouth of the river

Timok The Timok (Serbian and Bulgarian: Тимок; ro, Timoc), sometimes also known as Great Timok ( sr, Велики Тимок, Veliki Timok; ro, Timocul Mare), is a river in eastern Serbia, a right tributary of the Danube. For the last 15 k ...

in the west to the city of Silistra in the east. The land border from Silistra to Cape Sivriburun at the

is 139 km long. The Danube, with steep bluffs on the Bulgarian side and a wide area of swamps and marshes on the Romanian side, is crossed by two bridges –

New Europe Bridge The New Europe Bridge ( bg, Мостът Нова Европа, Mostŭt Nova Evropa; ro, Podul Noua Europă) is a road and rail bridge between the cities of Vidin, Bulgaria, and Calafat, Romania. It is the second bridge on the shared section o ...

between

Vidin Vidin ( bg, Видин, ; Old Romanian: Diiu) is a port city on the southern bank of the Danube in north-western Bulgaria. It is close to the borders with Romania and Serbia, and is also the administrative centre of Vidin Province, as well as ...

and

Calafat Calafat () is a city in Dolj County, southern Romania, in the region of Oltenia. It lies on the river Danube, opposite the Bulgarian city of Vidin, to which it is linked by the Calafat-Vidin Bridge, opened in 2013. After the destruction of the br ...

, and

Danube Bridge The Danube Bridge (also known as the Friendship Bridge; bg, Мост на дружбата, ''Most na druzhbata'' or, more commonly, Дунав Mост, ''Dunav most''; ro, Podul Prieteniei or ''Podul de la Giurgiu'') is a steel truss bridge ...

between

Ruse Ruse may refer to: Places *Ruse, Bulgaria, a major city of Bulgaria **Ruse Municipality ** Ruse Province ** 19th MMC – Ruse, a constituency *Ruše, a town and municipality in north-eastern Slovenia * Ruše, Žalec, a small settlement in east-ce ...

and Giurgiu. There are 48 Bulgarian and 32 Romanian islands along the river Danube; the largest one,

Belene Belene ( bg, Белене ) is a town in Pleven Province, Northern Bulgaria. It is the administrative centre of the homonymous Belene Municipality. The town is situated on the right bank of the Danube river, close to the town of Svishtov. Ge ...

(41 km²), belongs to Bulgaria. The land frontier has three border crossings at Silistra, Kardam and

Durankulak Durankulak ( bg, Дуранкулак ) is a village in northeastern Bulgaria, part of Shabla Municipality, Dobrich Province. Located in the historical region of Southern Dobruja, Durankulak is the north-easternmost inhabited place in Bulgaria a ...

at the Black Sea. It is also crossed by a major gas pipeline transporting natural gas from Russia to Bulgaria. Kadiitsa IMG 9979

The eastern border (378 km) is maritime and encompasses the

Bulgarian Black Sea Coast The Bulgarian Black Sea Coast (), also known as the Bulgarian Riviera, covers the entire eastern bound of Bulgaria stretching from the Romanian Black Sea resorts in the north to European Turkey in the south, along 378 km of coast ...

from Cape Sivriburun in the north to the mouth of the

Rezovo River The Rezovo (also Rezovska, Rezvaya and Rezve; bg, Резовска река ; tr, Mutludere ) is a river in the extreme southeast of Bulgaria and northernmost part of European Turkey. The river is situated in Bulgaria's Strandzha Nature Park. R ...

in the south. Bulgaria's littoral forms 1/10 of the total Black Sea coastline, and includes two important gulfs, the

Gulf of Varna The Gulf of Varna ( bg, Варненски залив, ''Varnenski zaliv'') is a gulf on the Bulgarian Black Sea coast. The length of the gulf is . Its maximum width is , and its depth ranges from . The Port of Varna Port of Varna ( bg, Прис ...

and the Gulf of Burgas, harbouring the country's two major ports. The southern border is 752 km long, of them 259 km are with

and 493 km are with

. The Bulgaria–Turkey frontier runs from the mouth of the Rezovo River in the east through the Strandzha Mountains and the Dervent Heights, crosses the river

Tundzha The Tundzha ( bg, Тунджа , tr, Tunca , el, Τόνζος ) is a river in Bulgaria and Turkey (known in antiquity as the Tonsus) and the most significant tributary of the Maritsa, emptying into it on Turkish territory near Edirne. The rive ...

at the village of Matochina and ends at the river

Maritsa Maritsa or Maritza ( bg, Марица ), also known as Meriç ( tr, Meriç ) and Evros ( ell, Έβρος ), is a river that runs through the Balkans in Southeast Europe. With a length of ,Kapitan Andreevo Kapitan Andreevo ( bg, Капитан Андреево ) is a village near the Bulgaria—Turkey—Greece tripoint in Svilengrad municipality, Haskovo Province, southern Bulgaria. As of 2005 it has 948 inhabitants and the mayor is Dimitar Shidero ...

. There are three border crossings at

Malko Tarnovo Malko Tarnovo ( bg, Малко Търново , "Little Tarnovo"; as opposed to Veliko Tarnovo) is a town in Burgas Province, southeastern Bulgaria, 5 km from the Turkish border. It is the only town in the interior of the Bulgarian Strandz ...

, Lesovo and Kapitan Andreevo. The border with Greece runs from Kapitan Andreevo through several ridges of the Rhodope Mountains, generally following the watershed of the rivers Arda and Vacha on the Bulgarian side, runs through the Slavyanka Mountain, crosses the river Struma at the village of

Kulata Kulata ( bg, Кулата , , el, Κούλα or Κούλατα) is a village in Petrich Municipality, Blagoevgrad Province, in southwestern Bulgaria. it has 892 inhabitants and the mayor is Dimitar Manolev. The village is a major border chec ...

and runs through the crest of the Belasitsa Mountain to the Tumba Peak. There are six border checkpoints at Svilengrad,

Ivaylovgrad Ivaylovgrad ( bg, Ивайловград, "city of Ivaylo") is a town in Haskovo Province in the south of Bulgaria set near the river Arda in the easternmost part of the Rhodope Mountains, and is the administrative centre of the homonymous Ivayl ...

Makaza Makaza ( bg, Маказа, gr, Μακάζα), previously also known as Balkan Toresi, is a mountain pass in the Eastern Rhodope Mountains, connecting southernmost central Bulgaria with north-easternmost Greece and thus the regions of Northern an ...

and 341 km are with

. The frontier with North Macedonia runs from the Tumba Peak in the south through the mountains of Ograzhden, Maleshevo,

Vlahina Vlahina () or Vlaina (), meaning "Vlach Mountain" is a mountain range on the border of southwestern Bulgaria and eastern North Macedonia. The highest peak is Ogreyak (also known as Kadiytsa) at 1,924 m. Nearby towns include Simitli to the nort ...

and

Osogovo Osogovo ( Bulgarian/Macedonian: ), or Osogovska Planina or Osogovski Planini (Осоговска Планина or Осоговски Планини), is a mountain range and ski resort between the south-western part of Bulgaria (Kyustendil Provi ...

up to mount Kitka. There are three border crossings near the town of

Petrich Petrich ( bg, Петрич ) is a town in Blagoevgrad Province in southwestern Bulgaria, located in Sandanski–Petrich Valley at the foot of the Belasica Mountains in the Strumeshnitsa Valley. According to the 2021 census, the town has 26,778 ...

and at the villages of Logodazh and

Gyueshevo Gyueshevo ( bg, Гюешево, ; also transliterated ''Gjueshevo'', ''Guieshevo'', ''Gjueševo'') is a village in Kyustendil Municipality, Kyustendil Province, in western Bulgaria. the population is 275 and the mayor is Stoyne Maksimov. The villag ...

. The border with Serbia runs from Kitka through the mountainous region Kraishte, including the

Ruy Mountain Ruy ( bg, Руй) or Ruj ( sr-Cyrl, Руј), is a mountain on the border of western Bulgaria and southeastern Serbia. Its eponymous highest peak rises 1,706 meters above sea level. The mountain is located west of Tran and is part of the Ruy-Veril ...

, crosses the valley of the river Nishava, runs through the main watershed of the western Balkan Mountains and follows the river

for 15 km until its confluence with the Danube. There are five border checkpoints at Dolno Uyno, Strezimirovtsi,

Kalotina Kalotina ( bg, Калотина ) is a village in Dragoman Municipality, Sofia Province, in westernmost central Bulgaria. As of 2010 it has 270 inhabitants and the mayor is Lidia Bozhilova. The village is located at the border with Serbia, 55 ...

Vrashka Chuka Vrashka Chuka ( bg, Връшка чука ) or Vrška čuka (Serbian Cyrillic: , ) is a peak in the Balkan Mountains, situated on the border between Bulgaria and Serbia. The peak is high. Vrashka Chuka is the most northwestern peak in the Balka ...

and

Bregovo Bregovo ( bg, Брегово ; ro, Bregovo) is a town in the very northwest of Bulgaria, situated on the east bank of the Timok River close to its mouth. It is the administrative centre of the homonymous Bregovo Municipality, Vidin Province. T ...

Topography

The

relief Relief is a sculptural method in which the sculpted pieces are bonded to a solid background of the same material. The term '' relief'' is from the Latin verb ''relevo'', to raise. To create a sculpture in relief is to give the impression that th ...

of Bulgaria is varied. In the relatively small territory of the country there are extensive lowlands, plains, hills, low and high mountains, many valleys and deep gorges. The main characteristic of Bulgaria's topography is four alternating bands of high and low terrain that extend east to west across the country. From north to south, those bands, called geomorphological regions, are the Danubian Plain, the Balkan Mountains, the Transitional region and the Rilo-

Rhodope Rhodope may refer to: * Rhodope (mythology), a figure of Greek mythology * Rhodope Mountains, in Bulgaria and Greece * Rhodope (regional unit) Rhodope ( el, Ροδόπη, ''Rodópi'' ) is one of the regional units of Greece. It is part of the reg ...

region. The easternmost sections near the

are hilly, but they gradually gain height to the west until the westernmost part of the country is entirely high ground. Table, showing the distribution of the height zones in Bulgaria: More than two-thirds of the country is plains, plateaus, or hilly land at an altitude less than 600 m. Plains (below 200 m) make up 31% of the land, plateaus and hills (200 to 600 m) 41%, low mountains (600 to 1,000 m) 10%, medium-high mountains (1,000 to 1,500 m) 10%, and high mountains (over 1,500 m) 3%. The average altitude of Bulgaria is 470 m. The contemporary relief of Bulgaria is a result of continuous geological evolution. The Bulgarian lands were often submerged by ancient seas and lakes, some land layers rose others sank.

Volcanic eruption Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists. These are oft ...

s were common both on land and in the water basins. All three main groups of rocks, magmatic,

sedimentary Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles ...

and

metamorphic Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causi ...

, are found in the country. The oldest rock formations in Bulgaria date from the Precambrian period than 500 million years ago. During the

Archean The Archean Eon ( , also spelled Archaean or Archæan) is the second of four geologic eons of Earth's history, representing the time from . The Archean was preceded by the Hadean Eon and followed by the Proterozoic. The Earth during the Arc ...

, Proterozoic and

Paleozoic The Paleozoic (or Palaeozoic) Era is the earliest of three geologic eras of the Phanerozoic Eon. The name ''Paleozoic'' ( ;) was coined by the British geologist Adam Sedgwick in 1838 by combining the Greek words ''palaiós'' (, "old") and ' ...

eras (4.0 billion to 252 million years ago) the magmatic rocks were formed. Throughout most of that period the only land areas were Rila, Pirin and the western Rhodope Mountains. The

Mesozoic The Mesozoic Era ( ), also called the Age of Reptiles, the Age of Conifers, and colloquially as the Age of the Dinosaurs is the second-to-last era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretace ...

era (252 million to 66 million years ago) saw the beginning of the Alpine orogeny that has formed the mountain ranges of the

Alpide belt The Alpide belt or Alpine-Himalayan orogenic belt,K.M. Storetvedt, K. M., ''The Tethys Sea and the Alpine-Himalayan orogenic belt; mega-elements in a new global tectonic system,'' Physics of the Earth and Planetary Interiors, Volume 62, Issues 1 ...

, including the Balkan Mountains and

Sredna Gora Sredna Gora ( bg, Средна гора ) is a mountain range in central Bulgaria, situated south of and parallel to the Balkan Mountains and extending from the Iskar to the west and the elbow of Tundzha north of Yambol to the east. Sredna Gora ...

. The Cenozoic era (since 66 million years ago) is characterized with active tectonic processes, the definitive formation of the Balkan Mountains, the formation of grabens and horsts in Rila, Pirin and Kraishte region. Examples of rock formations in Bulgaria: File:Белоградчишки скали 07.JPG,

Belogradchik Rocks The Belogradchik Rocks ( bg, Белоградчишки скали, ''Belogradchishki skali'') are a group of strangely shaped sandstone and Conglomerate (geology), conglomerate rock formations located on the western slopes of the Balkan Mountains ...

, western Balkan Mountains File:Devetashka pestera lqto 2009 1.JPG, Devetashka cave, Pre-Balkan File:Bulgarian Pyramid.jpg,

Melnik Earth Pyramids The Melnik Earth Pyramids ( bg, Мелнишки пирамиди) are rock formations, known as hoodoos, situated at the foothills of the Pirin mountain range in south-western Bulgaria. They span an area of 17 km2 near the town of Melnik, ...

, Pirin Mountains File:Bulgaria-Pobiti Kamani-04.jpg,

Pobiti Kamani Pobiti Kamani ( bg, Побити камъни, "planted stones"), Tubular concretions formed around a “rising methane-bearing fluid plume” also known as The Stone Desert, is a desert-like rock phenomenon located on the north west Varna Provi ...

, Danubian Plain File:Слънчеви лъчи.JPG,

Marvelous Bridges The Marvelous Bridges or Wonderful Bridges ( bg, Чудни �емостове, ''Chudni emostove'') are natural arches in the Rhodope Mountains of southern Bulgaria. They are located in the karst valley of the Erkyupriya River in the Western Rho ...

, Rhodope Mountains Exogenous processes such as

weathering Weathering is the deterioration of rocks, soils and minerals as well as wood and artificial materials through contact with water, atmospheric gases, and biological organisms. Weathering occurs ''in situ'' (on site, with little or no movement) ...

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is dis ...

and

sedimentation Sedimentation is the deposition of sediments. It takes place when particles in suspension settle out of the fluid in which they are entrained and come to rest against a barrier. This is due to their motion through the fluid in response to the ...

have an important impact on modelling the land surface and creating rock formations. The exogenous processes have formed

stone rivers A stone run (called also ''stone river'', ''stone stream'' or ''stone sea''scree Scree is a collection of broken rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. Talus deposits typically ...

s in the Balkan Mountains, Rila and Pirin; earth pyramids in Melnik, Stob and Katina; landslides, mainly along the Danube banks and the northern Black Sea coast;

fluvial terrace Fluvial terraces are elongated terraces that flank the sides of floodplains and fluvial valleys all over the world. They consist of a relatively level strip of land, called a "tread", separated from either an adjacent floodplain, other fluvial t ...

s; aeolian forms, such as dunes; karst forms, including numerous caves,

sinkhole A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer. The term is sometimes used to refer to doline, enclosed depressions that are locally also known as ''vrtače'' and shakeholes, and to openi ...

ponor A ponor is a natural opening where surface water enters into underground passages; they may be found in karst landscapes where the geology and the geomorphology is typically dominated by porous limestone rock. Ponors can drain stream or lake wate ...

s, etc.

Danubian Plain

The Danubian Plain encompasses the Moesian plate and extends from the river Timok in the west to the Black Sea in the east and from the river

in the north to the Balkan Mountains in the south, covering 31,520 km², or almost 1/3 of Bulgaria's total area. Its width varies from 25 to 30 km in the west to 120 km in the east. The highest point is Tarnov Dyal (502 m) on the Shumen Plateau; the average altitude is 178 m. As a result of the rock weathering processes the relief is uneven with fertile alluvial plains along the Danube (Vidinska, Chernopolska, Zlatia, Belenska, Pobrezhie, Aidemirska), and hilly terrain in the remaining area, including plateaus in the east. The altitude rises from west to east. The valleys of the rivers Vit and

Yantra Yantra () (literally "machine, contraption") is a geometrical diagram, mainly from the Tantric traditions of the Indian religions. Yantras are used for the worship of deities in temples or at home; as an aid in meditation; used for the benefit ...

divide the Danubian Plain into three parts – western, central and eastern. The topography of the plain is characterized with hilly heights and plateaus. Most of the heights and all plateaus are situated in the eastern parts. There are 14

basalt Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90 ...

mounds between Svishtov and the village of Dragomirovo. The predominant soil types are loess in the north, reaching a depth of up to 100 m at the banks of the Danube, and

chernozem Chernozem (from rus, чернозём, p=tɕɪrnɐˈzʲɵm, r=chernozyom; "black ground"), also called black soil, is a black-colored soil containing a high percentage of humus (4% to 16%) and high percentages of phosphorus and ammonia compou ...

in the south. The climate is

temperate In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout ...

. The flat relief and the openness of plain to the north facilitate arrival of moist air masses in spring, summer and autumn. In winter the Danubian Plain falls under the influence of the Eastern European anticyclone, which brings cold Arctic air masses. The mean temperature in January is −1 °C and in July is 24 °C, making it the geomorphological region with the highest average annual amplitude in Bulgaria – 25 °C.

Balkan Mountains

The Balkan Mountains range is a geological continuation of the Carpathian Mountains, forming part of the Alpine-Himalayan orogenic belt. This region is subdivided into two geomorphological units, the Pre-Balkan and the Balkan Mountains, also known in Bulgarian as ''Стара Планина'' – "Old Mountain". Their average altitude is 370 m and 735 m, respectively. Its total area is 26,720 km², of them the Pre-Balkan spans 15,730 km² and the Balkan Mountains – almost 11,000 km². The mountain range stretches from the valley of the river Timok in the west to

Cape Emine Cape Emine ( bg, Нос Емине ) is a headland located at the Bulgarian Black Sea Coast. It is located south of Varna, north of Burgas and south of Obzor. It forms the tip of Stara Planina. Cape Emine is said to be Bulgaria's stormiest ...

at the Black Sea coast in the east, spanning a length of 555 km and width between 20 and 70 km. The Balkan Mountains are divided into western, central and eastern part by the

Zlatitsa Zlatitsa ( bg, Златица ) is a town and the seat of the Zlatitsa Municipality in southern Bulgaria located in the Zlatitsa-Pirdop valley. It lies between Stara Planina to the north and Sredna Gora to the south at above sea level. It is si ...

and Vratnik Passes. The range is highest in its central part, which includes

Botev Peak Botev Peak ( bg, (връх) Ботев ) is, at above sea level, the highest peak of the Balkan Mountains. It is located close to the geographic centre of Bulgaria, and is part of the Central Balkan National Park. Until 1950, when it was rename ...

at 2,376 m; the altitude drops slowly to the east until it reaches the sea. The relief is varied, with many mountain passes, gorges and landforms. The southern slopes are steeper than the northern. For the most part the Balkan Range defines the most important watershed in Bulgaria with rivers draining north to the Danube or south to the river

Maritsa Maritsa or Maritza ( bg, Марица ), also known as Meriç ( tr, Meriç ) and Evros ( ell, Έβρος ), is a river that runs through the Balkans in Southeast Europe. With a length of ,Aegean Sea The Aegean Sea ; tr, Ege Denizi (Greek: Αιγαίο Πέλαγος: "Egéo Pélagos", Turkish: "Ege Denizi" or "Adalar Denizi") is an elongated embayment of the Mediterranean Sea between Europe and Asia. It is located between the Balkans ...

. Several rivers in the east drain directly into the Black Sea. In the west, the river Iskar forms a 65-km long gorge that runs north through the mountains.

Transitional region

The Transitional geomorphological region encompasses the territory between the Balkan Mountains and the Rilo-Rhodope Massif and has complex, mosaic relief composed mainly of medium-high and low mountains, valleys and plains. The altitude decreases from west to east. This region includes the Sub-Balkan valleys; the mountains and valleys of the Kraishte region, such as

, Miloslavska planina and Milevska Planina; the mountains Lyulin,

Vitosha Vitosha ( bg, Витоша ), the ancient ''Scomius'' or ''Scombrus'', is a mountain massif, on the outskirts of Sofia, the capital of Bulgaria. Vitosha is one of the symbols of Sofia and the closest site for hiking, alpinism and skiing. Conven ...

, Strandzha and Sakar; the Dervent Heights; as well as the fertile

. The highest point is

Cherni Vrah Cherni Vrah ( bg, Черни връх , "Black Peak") is the summit of Vitosha Mountain in Bulgaria. Rising to 2290 m, the peak is the fourth highest mountain summit in the country after Musala (2925 m, Rila Mountain), Vihren (2914&nbs ...

in Vitosha at 2,290 m. The Sub-Balkan valleys include nine valleys, situated between the Balkan Mountains in the north and Vitosha and Sredna Gora in the south. With an area of 1,186 km² and an average altitude of 550 m,

Sofia Valley The Sofia Valley ( bg, Софийска котловина, Sofiyska kotlovina), or Sofia Field ( bg, Софийско поле, Sofiysko pole, link=no), is a valley in central western Bulgaria bordering Stara Planina to the northeast, the Viskyar ...

is the largest of the nine and contains the nation's capital,

Sofia Sofia ( ; bg, София, Sofiya, ) is the capital and largest city of Bulgaria. It is situated in the Sofia Valley at the foot of the Vitosha mountain in the western parts of the country. The city is built west of the Iskar river, and h ...

. The Rose Valley encompasses the valleys of

Karlovo Karlovo ( bg, Карлово ) is a historically important town in central Bulgaria located in a fertile valley along the river Stryama at the southern foot of the Balkan Mountains. It is administratively part of Plovdiv Province and has a ...

and

Kazanlak Kazanlak ( bg, Казанлък , Thracian and Greek Σευθόπολις (''Seuthopolis''), tr, Kazanlık) is a Bulgarian town in Stara Zagora Province, located in the middle of the plain of the same name, at the foot of the Balkan mountai ...

and is renowned for its rose-growing industry, which has been thriving there for centuries, producing 85% of the world's

rose oil Rose oil (rose otto, attar of rose, attar of roses, or rose essence) is the essential oil extracted from the petals of various types of rose. ''Rose ottos'' are extracted through steam distillation, while ''rose absolutes'' are obtained through ...

. The Kazanlak Valley is also known as the

Valley of the Thracian Kings The Valley of the Thracian Rulers is a name which was made popular by the archaeologist Georgi Kitov and describes the extremely high concentration and variety of monuments of the Thracian culture in the Kazanlak Valley. It is believed that there a ...

due to the extremely high concentration and variety of monuments of the

Thracian culture The Thracians (; grc, Θρᾷκες ''Thrāikes''; la, Thraci) were an Indo-European languages, Indo-European speaking people who inhabited large parts of Eastern Europe, Eastern and Southeast Europe, Southeastern Europe in ancient history.. ...

. Srednogorie region stretches between the Sub-Balkan valleys in the north and the Rilo-Rhodope Massif in the south and from west to east includes the mountains Zavalska, Viskyar, Lyulin, Vitosha, Plana and Sredna Gora. The largest of these, Sredna Gora, is 280 km and reaches a maximum width of 50 km. Kraishte region covers the western parts of the Transitional geomorphological region and consists of two almost parallel mountain groups, Ruysko–Verilska and Konyavsko–Milevska, as well as numerous valleys. The Upper Thracian Plain encompasses the middle valley of the river

Maritsa Maritsa or Maritza ( bg, Марица ), also known as Meriç ( tr, Meriç ) and Evros ( ell, Έβρος ), is a river that runs through the Balkans in Southeast Europe. With a length of , The Rilo-Rhodope geomorphological region covers the south-western regions of Bulgaria and includes the Rhodope Mountains, Rila,

, Maleshevo, Ograzhden, Slavyanka and Belasitsa, as well as the valleys of the rivers Struma and Mesta. The Rhodopes are the most extensive mountain range in Bulgaria, spanning an area of 14,730 km² with an average altitude of 785 m, characterized with gentle and densely forested slopes. Their length from west to east is 249 km and reach width of 100 km. The altitude decreases from west to east. To the west are located Rila and Pirin, Bulgaria's two highest mountains. Rila includes

Mount Musala Musala ( bg, Мусала ); from Arabic through Ottoman Turkish: from ''Musalla'', "near God" or "place for prayer" is the highest peak in the Rila Mountains, as well as in Bulgaria and the entire Balkan Peninsula, standing at . With a topo ...

, whose 2,925 m peak is the highest in the Balkan Peninsula, while Pirin's highest peak

Vihren Vihren ( ) is the highest peak of Bulgaria's Pirin Mountains. Reaching , it is Bulgaria's second and the Balkans' third highest, after Musala and Mount Olympus. Although due to the karst topography Vihren is deprived of lakes and streams, a numb ...

at 2,915 m is the third-highest in the Balkans. Both Rila and Pirin have rocky peaks, stony slopes, extensive

Alpine zone Alpine tundra is a type of natural region or biome that does not contain trees because it is at high elevation, with an associated alpine climate, harsh climate. As the latitude of a location approaches the poles, the threshold elevation for alp ...

and hundreds glacial lakes. Further west is the Osogovo–Belasitsa mountain group along the border with North Macedonia, whose highest peak is

Ruen Ruen ( bg, Руен, ; tr, Ulanlı) is a village in southeastern Bulgaria, part of Burgas Province. It is the administrative centre of Ruen municipality, which lies in the northern part of Burgas Province. Municipality Ruen municipality include ...

in Osogovo at 2,251 m.

Black Sea coast

The

has a total length of 378 km from

in the north to the mouth of the river

Rezovska The Rezovo (also Rezovska, Rezvaya and Rezve; bg, Резовска река ; tr, Mutludere ) is a river in the extreme southeast of Bulgaria and northernmost part of European Turkey. The river is situated in Bulgaria's Strandzha Nature Park. ...

in the south. The northernmost section between the Bulgarian-Romanian border to

Shabla Shabla ( bg, Шабла ) is a town and seaside resort in northeastern Bulgaria, administrative centre of the Shabla Municipality part of Dobrich Province. Shabla municipality includes the following villages: Bojanovo, Chernomortsi, Durankulak, ...

has extensive sandy beaches and several coastal lakes, then the elevation rises as the coast reaches Cape

Kaliakra Kaliakra ( bg, Калиакра; ro, Caliacra) is a cape in the Southern Dobruja region of the northern Bulgarian Black Sea Coast, which ends with a long and narrow headland east of Kavarna, northeast of Varna and southwest of Mangalia. Th ...

, with 70 m high vertical cliffs. Near

Balchik Balchik ( bg, Балчик ; ro, Balcic) is a Black Sea coastal town and seaside resort in the Southern Dobruja area of northeastern Bulgaria. It is in Dobrich Province, 35 km southeast of Dobrich and 42 km northeast of Varna. It spr ...

and

Kavarna Kavarna ( bg, Каварна ; ro, Cavarna), is a Black Sea coastal town and seaside resort in the Dobruja region of northeastern Bulgaria. It lies northeast of Varna, from Dobrich on the international road E87 and south of the border with R ...

the limestone rocky coast is cut by wooded valleys. The landscape around the coast resorts of

Albena Albena ( bg, Албена) is a major Black Sea resort in northeastern Bulgaria, Balchik Municipality, situated from Balchik and from Varna. Albena is served by Varna Airport. Since 2005 is considered as a settlement by the National Statistic ...

and

Golden Sands Golden Sands ( Bulgarian: Златни пясъци, ''Zlatni pyasatsi'' ) is a major seaside resort town on the northern Bulgarian Black Sea Coast, adjacent to a national park of the same name in the municipality of Varna. Located 17 km n ...

is hilly, with a clearly expressed land slides. Dense forests at the mouth of the river

Batova The Batova ( bg, Батова) is a river in northeastern Bulgaria. The river flows in a wide valley between the Dobruja plateau to the north and the Franga plateau to the south, ultimately flowing directly into the Black Sea. The Batova is only 3 ...

mark the beginning of Frangensko plateau. South of

Varna Varna may refer to: Places Europe *Varna, Bulgaria, a city in Bulgaria **Varna Province **Varna Municipality ** Gulf of Varna **Lake Varna **Varna Necropolis *Vahrn, or Varna, a municipality in Italy *Varniai, a city in Lithuania * Varna (Šaba ...

the coastline is densely wooded, especially at the alluvial longose groves of the Kamchia Biosphere Reserve.

marks the end of the Balkan Mountain and divides the Bulgarian Black Sea coast in northern and southern parts. The southern section has wide and long beaches, with a number of small bays and headlands. All Bulgarian Black Sea islands are situated in the southern coast: St. Anastasia, St. Cyricus, St. Ivan, St. Peter and St. Thomas. Sandy beaches occupy 34% of the Bulgarian coastline. The two most important gulf are the

in the north and the Gulf of Burgas in the south, which is the largest in the Bulgarian Black Sea coast.

Climate

Considering its relatively small area, Bulgaria has variable and complex climate. The country occupies the southernmost part of the continental climatic zone, with small areas in the south falling within the Mediterranean climatic zone. The continental zone is predominant, because continental air masses flow easily into the unobstructed Danubian Plain. The continental influence, stronger during the winter, produces abundant snowfall; the Mediterranean influence increases during the second half of summer and produces hot and dry weather. Bulgaria is subdivided into five climatic zones: continental zone (Danubian Plain, Pre-Balkan and the higher valleys of the Transitional geomorphological region); transitional zone (Upper Thracian Plain, most of the Struma and Mesta valleys, the lower Sub-Balkan valleys); continental-Mediterranean zone (the southernmost areas of the Struma and Mesta valleys, the eastern Rhodope Mountains, Sakar and Strandzha); Black Sea zone along the coastline with an average length of 30–40 km inland; and alpine zone in the mountains above 1000 m altitude (central Balkan Mountains, Rila, Pirin, Vitosha, western Rhodope Mountains, etc.). Despite the large distance, the most important climate-forming factor is the Atlantic Ocean through the atmospheric circulation of the Icelandic cyclone and the Azores anticyclone, which bring cool and rainy weather in summer and relatively mild weather with abundant snowfall in winter. The influence of the

Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ...

is strongest in the southern parts of Bulgaria, mainly through the Mediterranean cyclones. Due to its small area, the influence of the

only affects a 30–40 km long strip along the coastline, mainly in summer, when the daily breeze circulation is most pronounced. Another important factor is the relief. The Bulgarian mountains and valleys act as barriers or channels for air masses, causing sharp contrasts in weather over relatively short distances. The Balkan Mountains form a barrier which effectively stops the cool air masses coming from the north and the warm masses from the south. The barrier effect of the Balkan Mountains is felt throughout the country: on the average, northern Bulgaria is about one degree cooler and receives about 192 mm more rain than lowlands of southern Bulgaria. The Rilo-Rhodope Massif bars the warm Mediterranean air masses and limits the Mediterranean influence to the southern valleys of the rivers Struma, Mesta, Maritsa and Tundzha, despite the close proximity of the

Aegean Sea The Aegean Sea ; tr, Ege Denizi (Greek: Αιγαίο Πέλαγος: "Egéo Pélagos", Turkish: "Ege Denizi" or "Adalar Denizi") is an elongated embayment of the Mediterranean Sea between Europe and Asia. It is located between the Balkans ...

. The mean annual temperature in Bulgaria is 10.6 °C and varies from 2.9 °C at the nation's highest peak Musala to 13.9 °C at the town of

Sandanski Sandanski ( bg, Сандански ; el, Σαντάνσκι, formerly known as Sveti Vrach, bg, Свети Врач, until 1947) is a town and a recreation centre in south-western Bulgaria, part of Blagoevgrad Province. Named after the Bulga ...

in the southern Struma valley. The average temperature in the Danubian Plain is 11.4 °C, in the Upper Thracian Plain 13.9 °C, in the lower mountains 8.1 °C and in the higher mountains 2.4 °C. The highest absolute temperature was measured at the town of Sadovo in 1916 47.2 °C; the lowest absolute temperature was measured at the town of Tran in 1947 –38.3 °C. The highest temperature in the lowlands and the hilly regions is in June, while in the higher mountains the warmest month is August. The lowest temperature is measured in January and February, respectively. Many valleys experience regular temperature inversions and fogs in winter. The country's lowest absolute temperature was measured during an inversion in the Tran valley. The average

precipitation In meteorology, precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzle, rain, sleet, snow, ice pellets, graupel and hail. ...

in Bulgaria is about 670 mm. It is uneven in terms of seasons and territory. In northern Bulgaria the highest precipitation is in May–June, while in southern Bulgaria it is in winter. The average amount of precipitation also varies in term of altitude – from 450 to 850 mm in the plains to 850–1200 mm. The lowest mean precipitation is in the eastern part of Dobrudzha and the Burgas Plain (450 mm) and in the area between Plovdiv and

Pazardzhik Pazardzhik ( bg, Пазарджик ) is a city situated along the banks of the Maritsa river, southern Bulgaria. It is the capital of Pazardzhik Province and centre for the homonymous Pazardzhik Municipality. The Tatars founded Pazardzhik i ...

(500 mm); the highest rainfall falls in the mountains – the Petrohan Pass in the western Balkan Mountains and

in the western Balkan Mountains (2293 mm); the highest daily rainfall was recorded at Saints Constantine and Helena resort (342 mm) near

in 1951. The total annual amount of the rainfall is 74 billion km³; of them 70% evaporate, 20% flow into the rivers and 10% soak into the soil. Most of the country is affected by droughts in June and August. The snow cover lasts from 20 to 30 days in the lowlands to 9 months in the highest mountains.

Hydrography

Bulgaria has a dense network of about 540 rivers, but with the notable exception of the

, most have short length and low water-level. The density is highest in the mountain areas and lowest in Dobrudzha, the Danubian Plain and the Upper Thracian Plain. There are two catchment basins: the

(57% of the territory and 42% of the rivers) and the

(43% of the territory and 58% of the rivers) basins. The Balkan Mountains divide Bulgaria into two nearly equal drainage systems. The larger system drains northward to the Black Sea, mainly by way of the Danube. This system includes the entire Danubian Plain and a stretch of land running 48–80 km inland from the coastline in the south. The Danube gets slightly more than 4% of its total volume from its Bulgarian tributaries. As it flows along the northern border, the Danube averages 1.6 to 2.4 km in width. The river's highest water levels usually occur during the May floods; it is frozen over an average of 40 days per year. The longest river located entirely in Bulgarian territory, the Iskar, with a length of 368 km and a catchment area of 8,640 km², is the only Bulgarian Danubian tributary that does not rise in the Balkan Mountains. Instead, the Iskar has its origin in the Rila Mountains. It passes through Sofia's eastern suburbs and crosses the Balkan Mountains through a spectacular 65 km–long gorge. Other important tributaries of the Danube include the rivers Lom,

, Vit,

Osam The Osam ( bg, Осъм ) is a river in northern Bulgaria. Its drainage basin is in between that of the river Vit to the west and the Yantra system to the east. Поречието на р. Осъм The river has two main tributaries in its upper ...

and

. The longest river flowing directly to the Black Sea is the

Kamchiya The Kamchiya (also Kamchia and Kamčija, bg, Камчия ) is a river in eastern Bulgaria. From its longest source, Golyama Kamchiya (Big Kamchiya), it has a total length of (. The river Kamchiya proper starts from the confluence of the two ...

(254 km), while other rivers include the

Provadiya Provadia ( bg, Провадия ) is a town in northeastern Bulgaria, part of Varna Province, located in a deep karst gorge (Provadia syncline) along the Provadiya River not far from the Bulgarian Black Sea Coast. It is the administrative centr ...

Aheloy Aheloy ( bg, Ахелой ) is a town and seaside resort in Pomorie Municipality of Burgas Province. it had 2,175 inhabitants. It is situated in eastern Bulgaria, on the Black Sea Coast between the major port of Burgas to the south and the bus ...

Ropotamo The Ropotamo ( bg, Ропотамо , from the Ancient Greek word Ροπόταμος ''ropotamos'' meaning "border river") is a river in south-eastern Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bu ...

Veleka The Veleka ( , ) is a river in the very southeast of Bulgaria (Burgas Province), as well as the very northeast of European Turkey. It is 147 km long, of which 108 km lies in Bulgaria Rezovo Rezovo ( bg, Резово, ) is a village and seaside resort in southeastern Bulgaria, part of Tsarevo Municipality, Burgas Province, in the coastal Strandzha geographical region. Geography The village is in Strandzha Nature Park. Lying at th ...

. The Aegean Sea catchment basin drains the Thracian Plain and most of the higher lands to the south and southwest. Several major rivers flow directly to the Aegean Sea. Most of these streams fall swiftly from the mountains and have cut deep, scenic gorges. The 480 km–long

Maritsa Maritsa or Maritza ( bg, Марица ), also known as Meriç ( tr, Meriç ) and Evros ( ell, Έβρος ), is a river that runs through the Balkans in Southeast Europe. With a length of ,Thracian Plain, all of

, the southern slopes of the Balkan Mountains, and the northern slopes of the eastern Rhodopes. After it leaves Bulgaria, the Maritsa forms most of the Greco-Turkish border. Maritsa's major tributaries are the

, Arda, Topolnitsa, Vacha, etc. The other Bulgarian rivers flowing directly to the Aegean are the Struma and the Mesta. Bulgaria has around 400 natural lakes with a total area of 95 km² and volume of 278 million km³. The

limans Limans is a Communes of France, commune in the Alpes-de-Haute-Provence Departments of France, department in southeastern France. Population See also *Communes of the Alpes-de-Haute-Provence department References

Communes of Alpe ...

and lagoons along the Black Sea coast include from north to south Lake Durankulak,

Lake Shabla Lake Shabla ( bg, Шабленско езеро) is a lagoon ( liman) in the north-eastern Bulgaria, which separated from the Black Sea by the sandbar. The area of the water body is 0.8 km2, depth 0.4–4 m, salinity 0,4%. The lagoon A lago ...

, Lake Varna, Lake Beloslav,

Lake Pomorie Lake Pomorie ( bg, Поморийско езеро, ''Pomoriysko ezero'') is the northernmost of the coastal Burgas Lakes, located in the immediate proximity of the Black Sea and the Bulgarian town of Pomorie. It has an area of 8.5 km2 (reachi ...

Lake Atanasovsko Lake Atanasovsko or Lake Atanasovo ( bg, Атанасовско езеро, ''Atanasovsko ezero'' ) is a salt coastal lake north of Burgas, Bulgaria, located in direct proximity to the Black Sea. The lake is about 5 km long and divided in two by a ...

Lake Burgas Lake Burgas ( bg, Бургаско езеро, ''Burgasko ezero'') or Lake Vaya (езеро Вая, ''ezero Vaya''), located near the Black Sea west of the city of Burgas, is the largest natural lake in Bulgaria, with an area of 27.60 km2, a ...

and

Lake Mandrensko Lake Mandrensko or Lake Mandra ( bg, Мандренско езеро, ''Mandrensko ezero'') is the southernmost of the Burgas Lakes, located in the immediate proximity of the Black Sea and close to Burgas. Being 8 km long and 1.3 km wide at maxim ...

. Of them, Lake Burgas is the most extensive with 27,6 km² and Lake Varna has the largest volume with 165,5 million km³. The lakes along the Danube were dried to clear land for agriculture with the notable exception of the

UNESCO The United Nations Educational, Scientific and Cultural Organization is a specialized agency of the United Nations (UN) aimed at promoting world peace and security through international cooperation in education, arts, sciences and culture. It ...

World Heritage Site A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for h ...

Lake Srebarna. There are 170 glacial lakes in Rila and 164 in Pirin. They are an important tourist asset. The most renown lakes include the

Seven Rila Lakes The Seven Rila Lakes ( bg, Седемте рилски езера, Sedemte rilski ezera, ) are a group of glacial lakes, situated in the northwestern Rila Mountain in Bulgaria. They are the most visited group of lakes in Bulgaria. The lakes are ...

Popovo Lake The Popovo Lake () is a glacial lake situated in the northern section of the Pirin mountain range, south-western Bulgaria. It is one of the eleven Popovi Lakes. The lake and its surroundings are among the most popular places for summer tourism i ...

, Banderishki Lakes,

Vasilashki Lakes The Vasilashki Lakes () are situated in Pirin, Bulgaria in a large cirque between the Todorka and Vasilashki Chukar peaks. The cirque is opened to the east, where it faces the Demyanitsa river in which the water of the lakes pour. This cirque als ...

Vlahini Lakes The Vlahini Lakes () is a group of six lakes, five of which are permanent, in the Pirin mountain range in southwestern Bulgaria, 1.5 km to the southwest from Vihren. The lakes are named after the village of Vlahi, located at a lower altitude ...

, etc. Swamps and

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found a ...

es include Alepu, Arkutino, Aldomirovtsi Marsh, Dragoman Marsh, etc. There are around 2,200 reservoirs with a total volume of c. 7 billion km³. The largest ones are Iskar Reservoir, Ogosta Reservoir, Dospat Reservoir, Batak Reservoir,

Kardzhali Reservoir The Kardzhali Reservoir is a reservoir formed by the ''Kardzhali Dam'', situated less than 1 km to the west of the town of Kardzhali in Kardzhali Province, Bulgaria. It is the second largest reservoir by volume in the country. The dam was c ...

Ivaylovgrad Reservoir The Ivailovgrad lake is one of the largest water reservoirs in Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of th ...

, Studen Kladenets,

Koprinka Reservoir Koprinka ( bg, Копринка) is a reservoir and dam in the Rose Valley, central Bulgaria. Its construction began after 1944 and was finished in 1956. It was built on the Tundzha river at 7 km to the west of the city of Kazanlak near t ...

Ticha Reservoir Ticha Reservoir ( bg, язовир Тича, ''yazovir Ticha'') is a reservoir in Varbitsa Municipality, Shumen Province, northeastern Bulgaria, located to the north and northeast of the town of Varbitsa. It is one of the largest lakes of Bulga ...

, etc. File:Veleka-river-dinev.jpg, River

Veleka The Veleka ( , ) is a river in the very southeast of Bulgaria (Burgas Province), as well as the very northeast of European Turkey. It is 147 km long, of which 108 km lies in Bulgaria Lake Shabla Lake Shabla ( bg, Шабленско езеро) is a lagoon ( liman) in the north-eastern Bulgaria, which separated from the Black Sea by the sandbar. The area of the water body is 0.8 km2, depth 0.4–4 m, salinity 0,4%. The lagoon A lago ...

File:Dolno vasilashko ezero.jpg, Dolno Vasilashko Lake File:Vucha PAN-HDR.jpg,

Vacha Reservoir Vacha Reservoir ( Yazovir Vacha; before 1999: Antonivanovtsi Reservoir) is a body of water associated with a dam in Devin Municipality, south Bulgaria. It is part of the Vacha Cascade Joint Implementation Project involving three more dams and f ...

File:Arda Meanders.jpg, River Arda at

Bulgaria is rich in

mineral water Mineral water is water from a mineral spring that contains various minerals, such as salts and sulfur compounds. Mineral water may usually be still or sparkling (carbonated/effervescent) according to the presence or absence of added gases. T ...

s, with 225 mineral springs and a total discharge of 5000 L/s, mainly in the south-western and central parts of the country along the faults between the mountains. Most of them, 148, are situated in southern Bulgaria, while the other 77 are in the northern part of the country. The springs in the north tend to be with cool water, while those to the south are mainly warm and hot. The hottest spring in Bulgaria and the Balkans is situated in

Sapareva Banya Sapareva Banya ( bg, Сапарева баня, transliterated ''Sapareva banya'') is a town in southwestern Bulgaria, part of Kyustendil Province. As Ancient Germania (in Dacia), a former bishopric, it is a Latin Catholic titular see. It is loca ...

and reaches 101.4 °C. The Bulgarian word for spa, ''баня'', transliterated as ''banya'', appears in some of the names of more than 50

spa town A spa town is a resort town based on a mineral spa (a developed mineral spring). Patrons visit spas to "take the waters" for their purported health benefits. Thomas Guidott set up a medical practice in the English town of Bath in 1668. He ...

s and resorts. They are located in several zones: ''Balkan Mountains zone'' (

Varshets Varshets ( bg, Вършец, variously transliterated; ) is a spa town in Montana Province, northwestern Bulgaria. It is the administrative centre of the homonymous Varshets Municipality. As of December 2019, its population is 5,444. The town ...

Shipkovo Shipkovo is a village in Troyan Municipality, Lovech Province, central northern Bulgaria.Guide Bulgaria
Accessed Dec ...

, Voneshta Voda), ''Srednogorie zone'' (Sofia,

Ovcha kupel Ovcha kupel ( bg, Овча купел ) is a district (''rayon'') of the Stolichna Municipality of Sofia City Province, Bulgaria. The name of the neighborhood is applied to the thermal water that comes out on the earth's surface: shepherds who ...

Bankya Bankya ( bg, Банкя ) is a small town located on the outskirts of Sofia in western Bulgaria. It is administratively part of Greater Sofia. The district is famous for the mineral springs and baths that have been used for medicinal purposes fo ...

Pancharevo Pancharevo ( bg, Панчарево, , also transcribed as Pančarevo) is a resort village and district located on the outskirts of Sofia close to Vitosha, Lozenska and Plana mountains and occupies the southeastern part of the Capital Municipa ...

, Strelcha,

Hisarya Hisarya ( bg, Хисаря , also known as ''Hisar'', ''Hissar'' or ''Hissarya'', formerly: Toplitsa) is a small resort town in Bulgaria, in Plovdiv Province. Hisar means 'fort, castle' in Arabic. The word was adopted in Persian and Ottoman Tur ...

Banya Banya may refer to: Places Australia * Banya, Queensland, a locality in the Sunshine Coast Region, Queensland, Australia Bulgaria * Banya, Blagoevgrad Province, a thermal spa and mountain resort in southwest Bulgaria * Banya, Burgas P ...

, Pavel Banya), ''Maritsa zone'' ( Kostenets (town), Kostenets (village), Dolna Banya, Momin Prohod), ''Rilo-Rhodope zone'' ( Devin,

Velingrad Velingrad ( bg, Велинград ) is a town in Pazardzhik Province, Southern Bulgaria, located at the western end of Chepino Valley, part of the Rhodope Mountains. It is the administrative center of the homonymous Velingrad Municipality a ...

Banite Banite ( bg, Баните ; "The Baths") is a village in the Central Rhodope Mountains of southern Bulgaria. It is the administrative centre of Banite Municipality, Smolyan Province. Banite is known for its mineral spring Mineral springs a ...

Beden The Beden, badan, or alternate type names Beden-seyed and Beden-safar, is a fast, ancient Somali single or double-masted maritime vessel and ship, typified by its towering stern-post and powerful rudder. It is also the longest surviving sewn boa ...

, Mihalkovo, Sapareva Banya), ''Struma zone'' (

Kyustendil Kyustendil ( bg, Кюстендил ) is a town in the far west of Bulgaria, the capital of the Kyustendil Province, a former bishopric and present Latin Catholic titular see. The town is situated in the southern part of the Kyustendil Valley, ...

, Ognyanovo,

Marikostinovo Marikostinovo is a village in Petrich Municipality, in Blagoevgrad Province, Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern ...

, Dobrinishte).

Soils

The

soil Soil, also commonly referred to as earth or dirt Dirt is an unclean matter, especially when in contact with a person's clothes, skin, or possessions. In such cases, they are said to become dirty. Common types of dirt include: * Debri ...

cover of Bulgaria is diverse. The soil resources of the country are adequately researched and include 17 soil types and 28 sub-types. Of them, six types form 88.7% of the soil cover: cinnamon soils (22.0%);

(20.4%); grey forest soils (17.0%); brown forest soils (14.8%); alluvial soils (9.0%) and smolnitsi (5.4%). There are three soil zones. The ''Northern forest-steppe zone'' covers the Danubian Plain and the Pre-Balkan up to 600–700 m altitude. The Danubian Plain is characterised by the fertile black earth chernozem, that accounts for 54% of the zone's area, while the Pre-Balkan is dominated by grey forest soils (39%), which have good physical characteristics but are low in organic matter and phosphorus. The ''Southern xerothermal zone'' encompasses Southern Bulgaria up to 700–800 m altitude and includes several specific soil types due to the more diverse topography and climate. The most common soil types are the cinnamon forest soils with acidic (cinnamonic) traces, smolnitsi and yellow-podzolic soils. The ''Mountain zone'' covers the mountainous regions above 700–800 m altitude and has a zonal soil cover. The brown forest soils are distributed at altitudes of 1000–2000 m, the dark mountain forest soils can be found at 1700–2200 m altitude and the mountain meadow soils – above 1700 m. These soils are typically shallow and prone to erosion and are usually acid to strongly acid.

Mineral resources

There are approximately 60 types of minerals that are extracted commercially in Bulgaria. The mineral resources are divided into three groups: fossil fuels, metals and

industrial mineral Industrial resources (minerals) are geological materials which are mined for their commercial value, which are not fuel (fuel minerals or mineral fuels) and are not sources of metals (metallic minerals) but are used in the industries based on th ...

s. The fossil fuels include coal, petroleum and natural gas. Bulgaria possesses significant reserves of coal estimated at 4,8 billion tons. More than 92% of them, or 4,5 billion tons, is lignite, which is the lowest rank of coal due to its relatively low heat content but is widely used for electricity generation. With reserves of 2,856 billion tons Maritsa Iztok, situated in the Upper Thracian Plain, is by far the largest coal basin in the country which powers

Maritsa Iztok Complex The Maritsa Iztok Complex is the largest energy complex in South Eastern Europe. It is located in Stara Zagora Province, south-central Bulgaria. It consists of three lignite-fired thermal power stations. The complex is located in a large lig ...

, the largest energy complex in South-Eastern Europe. Other lignite basins include Sofia valley (reserves of 870 million tons),

Elhovo Elhovo ( bg, Елхово ) is a Bulgarian town in Yambol Province, located on the left bank of the Tundzha river, between Strandzha and Sakar mountains. Second largest city in the region after Jambol, the city is located at 36 km from bo ...

(656 million tons), Lom (277 million tons), Maritsa Zapad (170 million tons). The reserves of sub-bituminous coal are 300 million tons, situated mainly near

Bobov Dol Bobov Dol ( bg, Бобов дол ; also Bobovdol) is a town in Bobov Dol Municipality, Kyustendil Province, southwestern Bulgaria. Bobov Dol lies near the geographic centre of the Balkan Peninsula and is known for its coal mines and thermal powe ...

Pernik Pernik ( bg, Перник ) is a town in western Bulgaria (about south-west of Sofia) with a population of 70,285 . Pernik is the most populated town in western Bulgaria after Sofia. It is the main town of Pernik Province and lies on both bank ...

and

Burgas Burgas ( bg, Бургас, ), sometimes transliterated as ''Bourgas'', is the second largest city on the Bulgarian Black Sea Coast in the region of Northern Thrace and the fourth-largest in Bulgaria after Sofia, Plovdiv, and Varna, with a pop ...

. The recoverable reserves of bituminous coal and anthracite are insignificant – only 10 and 2,5 million tons respectively. However, there is a huge basin of bituminous coal in

Southern Dobruja Southern Dobruja, South Dobruja or Quadrilateral ( Bulgarian: Южна Добруджа, ''Yuzhna Dobrudzha'' or simply Добруджа, ''Dobrudzha''; ro, Dobrogea de Sud, or ) is an area of northeastern Bulgaria comprising Dobrich and Silis ...

with estimated reserves of over 1 billion tons but its large depth (1370–1950 m) is an obstacle for its commercial exploitation. Elshitsa-mine

The Bulgarian exclusive economic zone has a total size of in the Black Sea. Petroleum and natural gas are found in northern Bulgaria and its EEZ in the Black Sea. Crude oil is extracted in

Dolni Dabnik Dolni Dabnik ( bg, Долни Дъбник ) is a town in Pleven Province in the Danubian Plain of central northern Bulgaria. It is the administrative centre of Dolni Dabnik municipality and lies to the west of the city of Pleven. As of December ...

and

Gigen Gigen ( bg, Гиген, ) is a village in northern Bulgaria, part of Gulyantsi Municipality, Pleven Province. It is located near the Danube River, close to the place where the Iskar River empties into it, opposite the Romanian town of Corabia. ...

in Pleven Province and in Tyulenovo, Dobrich Province. The proven reserves are 20 million tons but there are prospects for new discovering in the EEZ. Gas fields have been discovered off cape

(reserves of 3 billion m³), Deventsi (6 billion m³), between

Lovech Lovech ( bg, Ловеч, Lovech, ) is a city in north-central Bulgaria. It is the administrative centre of the Lovech Province and of the subordinate Lovech Municipality. The city is located about northeast from the capital city of Sofia. Near ...

and

Etropole Etropole ( bg, Етрополе, ) is a town in western Bulgaria, part of Sofia Province. It is located close to the northern slopes of the Balkan Mountains in the valley of the Iskar River, from Sofia. History The area was first settled by th ...

(est. 22 billion m³), as well as near

Devetaki Devetaki is a village in Lovech Municipality, Lovech Province, northern Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flan ...

and Butan. It is estimated that the 14,220 m² ''Khan Asparukh'' Block in the northern section of the Bulgarian EEZ has natural gas reserves of 100 billion m³. Bulgaria has significant reserves of metal ores, especially copper, zinc and lead, situated mainly in the southern half of the country. The two largest iron ore mines are located in Kremikovtsi near Sofia and Krumovo, Yambol Province with total reserves of 430 million tons.

Manganese Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy use ...

ore is extracted near

Obrochishte Obrochishte is a village in Balchik Municipality, Dobrich Province, northeastern Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the ea ...

in Dobrich Province (reserves of 85 million tons), as well as in the provinces of Sofia and Varna. The reserves of chromium are small and are scattered in the Rhodope Mountains. Bulgaria possesses important reserves of lead and

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...

, of them 60% are situated in the southern reaches of the Rhodope Mountains along the border with Greece at Madan,

Zlatograd Zlatograd ( bg, Златоград, , ) is a town in Smolyan Province, southern-central Bulgaria. It is the administrative centre of the homonymous Zlatograd Municipality. In December 2009, the town had a population of 7,110.Madzharovo Madzharovo ( , formerly Dupnitsa) is a small Bulgarian town in the Eastern Rhodopes, part of Haskovo Province, situated on the banks of the river Arda. It has only 590 population, as of December 2009,Rudozem Rudozem ( bg, Рудозем ) is a town in southern Bulgaria, near the Greek border, located in the Rhodope Mountains, where the Elhovo and Chepino rivers flow into the Arda, and is part of Smolyan Province. It is the administrative centre of the ...

Laki Laki () or Lakagígar (, ''Craters of Laki'') is a volcanic fissure in the western part of Vatnajökull National Park, Iceland, not far from the volcanic fissure of Eldgjá and the small village of Kirkjubæjarklaustur. The fissure is properly ...

, etc. Other mines are located near Ustrem and

. The reserves of copper ore are also significant, situated mainly at Asarel Medet near

Panagyurishte Panagyurishte ( bg, Панагюрище, also transliterated ''Panagjurište'', ) is a town in Pazardzhik Province, Southern Bulgaria, situated in a small valley in the Sredna Gora mountains. It is 91 km east of Sofia, 43 km north of P ...

, Elatsite mine near Etropole (650 million tons), Elshitsa, Medni Rid near

, etc. There is gold near Tran,

Chelopech Chelopech ( bg, Челопеч) is a village in the western part of Bulgaria. It is the only village in the '' Chelopech Municipality'', Sofia Province. Geographical outline The major railroad connecting Sofia and Burgas passes through the vi ...

and Madzharovo, as well as small quantities of

platinum Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish , a diminutive of "silver". Pla ...

, silver, molybdenum,

nickel Nickel is a chemical element with symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel is a hard and ductile transition metal. Pure nickel is chemically reactive but large pieces are slow ...

and

tungsten Tungsten, or wolfram, is a chemical element with the symbol W and atomic number 74. Tungsten is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a new element in 1781 and first isol ...

. Bulgaria is rich in industrial minerals, with 70 types being mined. There are important reserves of

rock salt Halite (), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride ( Na Cl). Halite forms isometric crystals. The mineral is typically colorless or white, but may also be light blue, dark blue, purple, pi ...

near the town of

Provadia Provadia ( bg, Провадия ) is a town in northeastern Bulgaria, part of Varna Province, located in a deep karst gorge (Provadia syncline) along the Provadiya River not far from the Bulgarian Black Sea Coast. It is the administrative centre ...

(4,4 billion tons).

Solnitsata Solnitsata ( bg, Солницата, "The Saltworks") was a prehistoric town located in present-day Bulgaria, near the modern city of Provadia. Believed by archaeologists to be the oldest town in Europe, Solnitsata was a fortified stone settlement ...

, an ancient town located nearby is believed by Bulgarian archaeologists to be the oldest in Europe and was the site of a salt production facility approximately six millennia ago. The reserves of kaolinite are estimated at 70 million tons, situated mainly in north-eastern Bulgaria –

Kaolinovo Kaolinovo ( bg, Каолиново, ) is a town in northeastern Bulgaria, part of Shumen Province. It is the administrative centre of the homonymous Kaolinovo Municipality, which lies in the northern part of Shumen Province. As of December 2009, ...

, Todor Ikonomovo, Senovo and

Vetovo Vetovo ( bg, Ветово, , ) is a town in northeastern Bulgaria, part of Ruse Province. It is the administrative centre of Vetovo Municipality, which lies in the eastern part of the area, and ranks third in population in the province after R ...

Marble Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Marble is typically not foliated (layered), although there are exceptions. In geology, the term ''marble'' refers to metamorphose ...

is extracted in the mountainous regions – Pirin, Rhodopes, Strandzha, the western Balkan Mountains. There are important quantities of

limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...

gypsum Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula . It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard or sidewalk chalk, and drywal ...

, baryte,

perlite Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian. It occurs naturally and has the unusual property of greatly expanding when heated sufficiently. It is an industrial ...

feldspar Feldspars are a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) felds ...

granite Granite () is a coarse-grained ( phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies under ...

, etc.

Biodiversity

The interaction of complex climatic, hydrological, geological and topographical conditions make Bulgaria one of the most biologically diverse countries of Europe.

, Bulgaria straddles the Illyrian and

n provinces of the

within the

. The country falls within six terrestrial

s of the

: Balkan mixed forests,

, Euxine-Colchic deciduous forests,

and

. Around 35% of Bulgaria's land area consists of forests, which include some of the oldest trees in the world, such as

Baikushev's pine Baikushev's pine ( bg, Байкушевата мура) (also known as the Baikushev white fir, or the Baikushev fir) is a coniferous tree from the species Bosnian pine (''Pinus heldreichii'') situated in Pirin, southwestern Bulgaria. It is named ...

and the Granit oak. Bulgaria's flora contains between 3,800 and 4,200

vascular plant Vascular plants (), also called tracheophytes () or collectively Tracheophyta (), form a large group of land plants ( accepted known species) that have lignified tissues (the xylem) for conducting water and minerals throughout the plant. They ...

species of which 170 are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

and 150 are considered endangered. There more than 6,500 species of

non-vascular plant Non-vascular plants are plants without a vascular system consisting of xylem and phloem. Instead, they may possess simpler tissues that have specialized functions for the internal transport of water. Non-vascular plants include two distantly rel ...

s and

fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

Bulgaria's vertebrate fauna is among the most diverse in Europe. The zoogeographical regions are three: the Eurosiberian region, encompassing the Danubian Plain and the mountainous regions of the country; the Irano-Turanian Region encompassing Southern Dobrudzha; and the Mediterranean region that includes the Upper Thracian Plain, the lower Struma valley and the Black Sea coast. Bulgaria is inhabited by around 100 mammal species, including

Brown bear The brown bear (''Ursus arctos'') is a large bear species found across Eurasia and North America. In North America, the populations of brown bears are called grizzly bears, while the subspecies that inhabits the Kodiak Islands of Alaska is ...

Grey wolves The wolf (''Canis lupus''; : wolves), also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. More than thirty subspecies of ''Canis lupus'' have been recognized, and gray wolves, as popularly un ...

Wild boar The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The species is ...

Golden jackal The golden jackal (''Canis aureus''), also called common jackal, is a wolf-like canid that is native to Southeast Europe, Southwest Asia, South Asia, and regions of Southeast Asia. The golden jackal's coat varies in color from a pale creamy ...

s, Red foxes,

Wildcat The wildcat is a species complex comprising two small wild cat species: the European wildcat (''Felis silvestris'') and the African wildcat (''F. lybica''). The European wildcat inhabits forests in Europe, Anatolia and the Caucasus, while th ...

Red deer The red deer (''Cervus elaphus'') is one of the largest deer species. A male red deer is called a stag or hart, and a female is called a hind. The red deer inhabits most of Europe, the Caucasus Mountains region, Anatolia, Iran, and parts of we ...

Roe deer The roe deer (''Capreolus capreolus''), also known as the roe, western roe deer, or European roe, is a species of deer. The male of the species is sometimes referred to as a roebuck. The roe is a small deer, reddish and grey-brown, and well-adapt ...

European fallow deer The European fallow deer (''Dama dama''), also known as the common fallow deer or simply fallow deer, is a species of ruminant mammal belonging to the family Cervidae. It is historically native to Turkey and possibly the Italian Peninsula, Bal ...

European hare The European hare (''Lepus europaeus''), also known as the brown hare, is a species of hare native to Europe and parts of Asia. It is among the largest hare species and is adapted to temperate, open country. Hares are herbivorous and feed mainly ...

Southern white-breasted hedgehog The southern white-breasted hedgehog (''Erinaceus concolor''), sometimes referred to as white-bellied hedgehog or white-chested hedgehog, is a hedgehog native to Eastern Europe and Southwestern Asia. Description It is very similar in lifestyle an ...

Badger Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united by ...

Marbled polecat The marbled polecat (''Vormela peregusna'') is a small mammal belonging to the monotypic genus ''Vormela'' within the mustelid subfamily Ictonychinae. ''Vormela'' is from the German word , which means "little worm". The specific name ''pereg ...

European polecat The European polecat (''Mustela putorius''), also known as the common polecat, black polecat, or forest polecat, is a species of mustelid native to western Eurasia and North Africa. It is of a generally dark brown colour, with a pale underbell ...

European pine marten The European pine marten (''Martes martes''), also known as the pine marten, is a mustelid native to and widespread in most of Europe, Asia Minor, the Caucasus and parts of Iran, Iraq and Syria. It is listed as Least Concern on the IUCN Red List. ...

s, four species of

Oceanic dolphin Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as the ...

Mediterranean monk seal The Mediterranean monk seal (''Monachus monachus'') is a monk seal belonging to the family Phocidae. , it is estimated that fewer than 700 individuals survive in three or four isolated subpopulations in the Mediterranean, (especially) in the Ae ...

s among other. Protection, reintroductions and repopulations like those of the

European bison The European bison (''Bison bonasus'') or the European wood bison, also known as the wisent ( or ), the zubr (), or sometimes colloquially as the European buffalo, is a European species of bison. It is one of two extant species of bison, along ...

, the

Eurasian beaver The Eurasian beaver (''Castor fiber'') or European beaver is a beaver species that was once widespread in Eurasia, but was hunted to near-extinction for both its fur and castoreum. At the turn of the 20th century, only about 1,200 beavers survi ...

, and the

Eurasian lynx The Eurasian lynx (''Lynx lynx'') is a medium-sized wild cat widely distributed from Northern, Central and Eastern Europe to Central Asia and Siberia, the Tibetan Plateau and the Himalayas. It inhabits temperate and boreal forests up to an eleva ...

are intended and reported. The avian fauna is represented by 434 species of birds, which is the second highest number in Europe. Almost all species of the

True owl The true owls or typical owls (family Strigidae) are one of the two generally accepted families of owls, the other being the barn owls (Tytonidae). This large family comprises 230 living or recently extinct species in 24 genera. The typical owl ...

s live in the country, also

White stork The white stork (''Ciconia ciconia'') is a large bird in the stork family, Ciconiidae. Its plumage is mainly white, with black on the bird's wings. Adults have long red legs and long pointed red beaks, and measure on average from beak tip to e ...

Common crane The common crane (''Grus grus''), also known as the Eurasian crane, is a bird of the family Gruidae, the cranes. A medium-sized species, it is the only crane commonly found in Europe besides the demoiselle crane (''Grus virgo'') and the Siberian ...

, Demoiselle crane. Important conservation species are the

Eastern imperial eagle The eastern imperial eagle (''Aquila heliaca'') is a large bird of prey that breeds in southeastern Europe and extensively through West and Central Asia. Most populations are migratory and winter in northeastern Africa, the Middle East and South ...

, the

Cinereous Cinereous is a colour, meaning ashy grey in appearance, either consisting of or resembling ashes, or a grey colour tinged with coppery brown. It is derived from the Latin ''cinereus'', from ''cinis'' (ashes). The first recorded use of ''cinere ...

, Griffon,

Egyptian Egyptian describes something of, from, or related to Egypt. Egyptian or Egyptians may refer to: Nations and ethnic groups * Egyptians, a national group in North Africa ** Egyptian culture, a complex and stable culture with thousands of years of ...

and the Bearded vultures, the Great white pelican, the

Dalmatian pelican The Dalmatian pelican (''Pelecanus crispus'') is the largest member of the pelican family, and perhaps the world's largest freshwater bird, although rivaled in weight and length by the largest swans. They are elegant soaring birds, with wingspa ...

, etc. The reptiles and the amphibians found in Bulgaria are 38 and 20 species respectively. There are four

turtle Turtles are an order of reptiles known as Testudines, characterized by a special shell developed mainly from their ribs. Modern turtles are divided into two major groups, the Pleurodira (side necked turtles) and Cryptodira (hidden necked t ...

and two

tortoise Tortoises () are reptiles of the family Testudinidae of the order Testudines (Latin: ''tortoise''). Like other turtles, tortoises have a shell to protect from predation and other threats. The shell in tortoises is generally hard, and like oth ...

species of four families –

Cheloniidae Cheloniidae is a family of typically large marine turtles that are characterised by their common traits such as, having a flat streamlined wide and rounded shell and almost paddle-like flippers for their forelimbs. They are the only sea turtles t ...

, Emydidae,

Geoemydidae The Geoemydidae (formerly known as Bataguridae) are one of the largest and most diverse families in the order Testudines (turtles), with about 70 species. The family includes the Eurasian pond and river turtles and Neotropical wood turtles. Mem ...

and Testudinidae; fourteen lizard species of four families –

Anguidae Anguidae refers to a large and diverse family of lizards native to the Northern Hemisphere. Common characteristics of this group include a reduced supratemporal arch, striations on the medial faces of tooth crowns, osteoderms, and a lateral fold ...

Gekkonidae Gekkonidae (the common geckos) is the largest family of geckos, containing over 950 described species in 64 genera. Members of the Gekkonidae comprise many of the most widespread gecko species, including house geckos ('' Hemidactylus''), tokay g ...

, Lacertidae and Scincidae; and eighteen

snake Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes . Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more j ...

species of four families –

Boidae The Boidae, commonly known as boas or boids, are a family of nonvenomous snakes primarily found in the Americas, as well as Africa, Europe, Asia, and some Pacific Islands. Boas include some of the world's largest snakes, with the green anacond ...

, Colubridae,

Typhlopidae The Typhlopidae are a family of blind snakes. They are found mostly in the tropical regions of Africa, Asia, the Americas, and all mainland Australia and various islands. The rostral scale overhangs the mouth to form a shovel-like burrowing str ...

and

Viperidae The Viperidae (vipers) are a family of snakes found in most parts of the world, except for Antarctica, Australia, Hawaii, Madagascar, and various other isolated islands. They are venomous and have long (relative to non-vipers), hinged fangs th ...

. The

ichthyofauna Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

of the country has not been fully researched, but there is a rich variety with various species of Sturgeons, Black sea shark, Longnose spurdog,

Thornback ray The thornback ray (''Raja clavata''), or thornback skate, is a species of ray fish in the family Rajidae. Distribution The Thornback ray is found in the Atlantic coastal waters of Europe and western Africa. It is also present from south Afri ...

Common stingray The common stingray (''Dasyatis pastinaca'') is a species of stingray in the family Dasyatidae, found in the northeastern Atlantic Ocean and the Mediterranean and Black Seas. It typically inhabits sandy or muddy habitats in coastal waters shall ...

Northern pike The northern pike (''Esox lucius'') is a species of carnivorous fish of the genus ''Esox'' (the pikes). They are typical of brackish and fresh waters of the Northern Hemisphere (''i.e.'' holarctic in distribution). They are known simply as a p ...

, European eel, etc. As of 2000 there are 207 fish species. There are an estimated 27,000 species of insects and other invertebrates. Concern about biodiversity conservation remains strong within the country. In 1998 the

Government of Bulgaria The Council of Ministers ( bg, Министерски съвет, ''Ministerski savet'') is the main authority of the executive power in the Republic of Bulgaria. It consists of the Prime Minister of Bulgaria and all the specialized ministers ...

approved the National Biological Diversity Conservation Strategy, which was inspired by the Pan European Strategy for Biological and Landscape Diversity. Bulgaria has some of the largest Natura 2000 areas in the

European Union The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been de ...

covering 33.8% of its territory. The national policy for governing and management of the protected areas is implemented by the Ministry of Environment and Water. Bulgaria's biodiversity is conserved in three national parks, 11 nature parks and 55

nature reserve A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or ...

s. Of them,

Pirin National Park Pirin National Park ( bg, Национален парк "Пирин"), originally named Vihren National Park, encompasses the larger part of the Pirin Mountains in southwestern Bulgaria, spanning an area of . It is one of the three national pa ...

Srebarna Nature Reserve The Srebarna Nature Reserve ( bg, Природен резерват Сребърна, transliterated as ''Priroden rezervat Srebarna'') is a nature reserve in northeastern Bulgaria (Southern Dobruja), near the village of the same name, 18 km ...

and nine forest reserves within the

Central Balkan National Park The Central Balkan National Park ( bg, Национален парк Централен Балкан) lies in the heart of Bulgaria, nestled in the central and higher portions of the Balkan Mountains. Its altitude varies from 550 m. near the town ...

are included in the

World Heritage List A World Heritage Site is a landmark or area with legal protection by an international convention administered by the United Nations Educational, Scientific and Cultural Organization (UNESCO). World Heritage Sites are designated by UNESCO for ...

. Spanning a territory of 1,161 square kilometres

Strandzha Nature Park Strandzha Nature Park ( bg, Природен парк Странджа ''Priroden park Strandzha'', also transliterated as Stranja Nature Park) is the largest protected area in Bulgaria spanning a territory of in the Strandzha Mountain in the ...

is the largest protected area in the country. Established in 1936 Vitosha Nature Park is the oldest in Bulgaria and in the Balkan Peninsula.

Footnotes

Citations

References

Sources

* * *

External links

* {{DEFAULTSORT:Geography Of Bulgaria bn:বুলগেরিয়া#ভূগোল