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Volcanic Plugs
A volcanic plug, also called a volcanic neck or lava neck, is a volcano, volcanic object created when magma hardens within a Volcanic vent, vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if rising Volatile (astrogeology)#Igneous petrology, volatile-charged magma is trapped beneath it, and this can sometimes lead to an explosive eruption. In a plinian eruption the plug is destroyed and ash is ejected. Glaciation, Glacial erosion can lead to exposure of the plug on one side, while a long slope of material remains on the opposite side. Such landforms are called crag and tail. If a plug is preserved, erosion may remove the surrounding rock while the erosion-resistant plug remains, producing a distinctive upstanding landform. Examples of volcanic plugs Africa Near the village of Rhumsiki in the Far North Region (Cameroon), Far North Province of Cameroon, Kapsiki Peak is an example of a volcanic plug and is one of the most phot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garajonay National Park
Garajonay National Park (, ) is located in the center and north of the island of La Gomera, one of the Canary Islands (Spain). It was declared a national park in 1981 and a World Heritage Site by UNESCO in 1986. It occupies 40 km2 (15 sq mi) and it extends into each of the six municipalities on the island. Nearly 450,000 tourists visit the park every year. There is accommodation for tourists just outside the park's boundary. The park is named after the rock formation of Garajonay, the highest point on the island at . It also includes a small plateau whose altitude is above sea level. Features of the national park include the massive rocks that are found along the island. These are former volcanoes whose shapes have been carved by erosion. Some, like the "Fortaleza" (fortress in Spanish) were considered sacred by the native islanders, as well as ideal refuges when attacked. The park is crossed by a large network of 18 footpaths, trekking being one of the main tourist acti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Czech Republic
The Czech Republic, also known as Czechia, and historically known as Bohemia, is a landlocked country in Central Europe. The country is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The Czech Republic has a hilly landscape that covers an area of with a mostly temperate Humid continental climate, continental and oceanic climate. The capital and largest city is Prague; other major cities and urban areas include Brno, Ostrava, Plzeň and Liberec. The Duchy of Bohemia was founded in the late 9th century under Great Moravia. It was formally recognized as an Imperial Estate of the Holy Roman Empire in 1002 and became Kingdom of Bohemia, a kingdom in 1198. Following the Battle of Mohács in 1526, all of the Lands of the Bohemian Crown were gradually integrated into the Habsburg monarchy. Nearly a hundred years later, the Protestantism, Protestant Bohemian Revolt led to the Thirty Years' War. After the Battle of White ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trosky Castle
Trosky Castle () is a castle ruin in the municipality of Troskovice in the Liberec Region of the Czech Republic and its name translates literally as "ruins" or "debris". It lies about south of Semily. It is located on the summits of two basalt volcanic plugs. On the lower peak, , is the two-storey structure called ''Baba'' (Crone), and on the higher outcrop, , is the four-sided structure known as ''Panna'' (Maiden). The castle is a landmark of the Bohemian Paradise region. History The castle was established by Čeněk of Wartenberg in the second half of the 14th century. Two towers were constructed, one on top of each rock, and various residential buildings and outhouses were erected between them. Three rings of fortified walls protected the complex. According to archaeological research, the castle was founded significantly earlier than its first written mention in 1396, by which time Čeněk was already deceased and referred to with the epithet "of Trosky." At the time of hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Le Puy-en-Velay
Le Puy-en-Velay (, ; , before 1988: ''Le Puy'') is the Prefectures in France, prefecture of the Haute-Loire Departments of France, department in the Auvergne-Rhône-Alpes Regions of France, region of south-central France. Located near the river Loire, the city is famous for its Le Puy Cathedral, cathedral, for a Le Puy green lentil, kind of lentil, for its lace-making, as well as for being the origin of the ''Chemin du Puy,'' one of the principal origin points of the pilgrimage Routes of Santiago de Compostela in France, route of Santiago de Compostela in France. In 2021, the Communes of France, commune had a population of 18,629. History Le Puy-en-Velay was a major Diocese, bishopric by the early period of France in the Middle Ages, medieval France. Its foundation is largely legendary. According to a martyrology compiled by Ado of Vienne, published in many copies in 858, and supplemented in the mid-10th century by Gauzbert of Limoges, a priest named George accompanied a certa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint Michel D'Aiguilhe
Saint-Michel d'Aiguilhe (St. Michael of the Needle) is a chapel in Aiguilhe, near Le Puy-en-Velay, France. The chapel is reached by 268 steps carved into the rock. It was built in 969 on a volcanic plug high. The surface on top of the plug is 57 metres (187 ft) in diameter. Bishop Godescalc of Le Puy-en-Velay had the chapel built to celebrate his return from the pilgrimage of Saint James in 951. The chapel is dedicated to the Archangel Michael, the patron of mountaintops and other high places. A prehistoric dolmen dedicated to Mercury by the Romans was built on the volcanic plug before the construction of the chapel. Three stones from this dolmen are said to be incorporated into the chapel. In the 12th century, the chapel was enlarged, and a nave, ambulatory, two side chapels, a narthex, a carved portal, more frescoes, and a bell tower were added. The bell tower was built in the style of the nearby Cathedral Notre-Dame-du-Puy. Discovery of reliquary objects During ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Motta Sant'Anastasia
Motta Sant'Anastasia () is a ''comune'' (municipality) in the Metropolitan City of Catania in the Italy, Italian region Sicily, located about southeast of Palermo and about west of Catania. Geography Motta Sant'Anastasia borders the following municipalities: Belpasso, Camporotondo Etneo, Catania, Misterbianco. The oldest part of Motta Sant'Anastasia was built on a volcanic plug. A long and intense eruption dating back to 550,000 years ago caused the formation of this volcanic cone. Over the centuries, through erosion the cone has acquired its current shape having a quasi-regular, prismatic-hexagonal and pentagonal section, reaching a height of . The vegetation on the rock is made up of lichens and Opuntia ficus-indica, Indian fig (''Opuntia ficus-indica''), originally from Mexico but naturalized in the Mediterranean basin. History Motta, like other cities in the Simeto Valley, has ancient origins. Archaeological studies dating back to 1954 in contrada Ardizzone, testify ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borgarvirki
Borgarvirki lies between Vesturhóp and Víðidalur in the north of Iceland, and at 177m above sea level it dominates the surrounding region. Made out of basalt strata, it has been used as a fortress. Borgarvirki is a natural phenomenon, altered by humans in earlier centuries. In 1949, Borgarvirki was renovated by workers who installed a granite lintel at the main entrance. Borgarvirki is a volcanic plug (gosstapi ), and the Icelandic sagas mention that in earlier centuries it was used for military purposes. There is a viewing dial inside. It is accessible to visitors travelling around the peninsula of Vatnsnes
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Rocher St Michel à Aiguilhe
Rocher may refer to: Places Canada *Rocher Lake (Nipukatasi River), in the Broadback River watershed in Quebec * Petit-Rocher, a village in Gloucester County, New Brunswick * Rocher Percé, a natural arch near the village of Percé, Quebec France * Rocher, Ardèche, a commune in the department of the Ardèche * Rochers de Naye, a summit of Alps * Notre-Dame-du-Rocher, a commune in the department of Orne * Saint-Antoine-du-Rocher, a commune in the department of Indre-et-Loire Elsewhere * Rocher de Monaco or Rock of Monaco, a monolith Other uses *Allan Rocher (1936–2016), Australian politician * Captain Rocher, a character in Dan Brown's book, ''Angels & Demons'' *Ferrero Rocher Ferrero Rocher ( , , ; stylized in all caps) is a brand of chocolate and hazelnut confectionery , confection manufactured by the Italian company Ferrero SpA, Ferrero. Michele Ferrero is credited as the product's creator. Each Ferrero Rocher bal ..., chocolate balls * Thierry Rocher (1959–2025), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Heritage Site
World Heritage Sites are landmarks and areas with legal protection under an treaty, international treaty administered by UNESCO for having cultural, historical, or scientific significance. The sites are judged to contain "cultural and natural heritage around the world considered to be of outstanding value to humanity". To be selected, a World Heritage Site is nominated by its host country and determined by the UNESCO's World Heritage Committee to be a unique landmark which is geographically and historically identifiable, having a special cultural or physical significance, and to be under a sufficient system of legal protection. World Heritage Sites might be ancient ruins or historical structures, buildings, cities, deserts, forests, islands, lakes, monuments, mountains or wilderness areas, and others. A World Heritage Site may signify a remarkable accomplishment of humankind and serve as evidence of humanity's intellectual history on the planet, or it might be a place of grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sri Lanka
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka, also known historically as Ceylon, is an island country in South Asia. It lies in the Indian Ocean, southwest of the Bay of Bengal, separated from the Indian subcontinent, Indian peninsula by the Gulf of Mannar and the Palk Strait. It shares a maritime border with the Maldives in the southwest and India in the northwest. Sri Jayawardenepura Kotte is the legislative capital of Sri Lanka, while the largest city, Colombo, is the administrative and judicial capital which is the nation's political, financial and cultural centre. Kandy is the second-largest urban area and also the capital of the last native kingdom of Sri Lanka. The most spoken language Sinhala language, Sinhala, is spoken by the majority of the population (approximately 17 million). Tamil language, Tamil is also spoken by approximately five million people, making it the second most-spoken language in Sri Lanka. Sri Lanka has a population of appr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dambulla
Dambulla ( ''Dam̆bulla'', ''Tampuḷḷai'') is a city situated in the north of Matale District, in Sri Lanka's Central Province. It is the second largest populated and urbanised centre after Matale in the Matale District. It is situated north-east of Colombo, north of Matale and north of Kandy. Due to its location at a major junction, it is the centre of major vegetable distribution in the country. Major attractions of the area include the largest and best preserved cave temple complex of Sri Lanka, sigiriya rock fortress located in the division and the Rangiri Dambulla International Stadium, famous for being built in just 167 days. The area also boasts the largest rose quartz mountain range in South Asia, and the Iron wood forest, or Na Uyana Aranya. Ibbankatuwa prehistoric burial site near Dambulla cave temple complexes is the latest archaeological site of significant historical importance found in Dambulla, which is located within of the cave temples provid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
