Forth Islands
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The Islands of the Forth are a group of small islands located in the
Firth of Forth The Firth of Forth () is a firth in Scotland, an inlet of the North Sea that separates Fife to its north and Lothian to its south. Further inland, it becomes the estuary of the River Forth and several other rivers. Name ''Firth'' is a cognate ...
and in the estuary of the
River Forth The River Forth is a major river in central Scotland, long, which drains into the North Sea on the east coast of the country. Its drainage basin covers much of Stirlingshire in Scotland's Central Belt. The Scottish Gaelic, Gaelic name for the ...
on the east coast of Scotland. Most of the group lie in the open waters of the
firth Firth is a word in the English and Scots languages used to denote various coastal waters in the United Kingdom, predominantly within Scotland. In the Northern Isles, it more often refers to a smaller inlet. It is linguistically cognate to Scan ...
, between the
Lothians Lothian (; ; ) is a region of the Scottish Lowlands, lying between the southern shore of the Firth of Forth and the Lammermuir Hills and the Moorfoot Hills. The principal settlement is the Scottish capital, Edinburgh, while other signific ...
and
Fife Fife ( , ; ; ) is a council areas of Scotland, council area and lieutenancy areas of Scotland, lieutenancy area in Scotland. A peninsula, it is bordered by the Firth of Tay to the north, the North Sea to the east, the Firth of Forth to the s ...
, with the majority to the east of the city of
Edinburgh Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh ...
. Two islands lie further west in the river estuary. The islands have a varied geology and history; over the centuries, several have had both ecclesiastical connections and a history of involvement in military occupations. Various lighthouses and other aids to navigation have been erected on the islands and skerries — one of these dates to the 17th century. But only one of the islands still has year-round human inhabitants. The area has diverse bird and sea life. The scientific name for the
northern gannet The northern gannet (''Morus bassanus'') is a seabird, the largest species of the gannet family, Sulidae. It is native to the coasts of the Atlantic Ocean, breeding in Western Europe and Northeastern North America. It is the largest seabird in t ...
was chosen in recognition of this bird's connection with the
Bass Rock The Bass Rock, or simply the Bass (), is an island in the outer part of the Firth of Forth in the east of Scotland. Approximately offshore, and north-east of North Berwick, it is a steep-sided volcanic plug, at its highest point, and is home ...
. There are only a few islands off the coast of eastern Scotland, and most of them of any significant size are included in this group.Other east coast islands include
Mugdrum Mugdrum Island lies in the Firth of Tay on the east coast of Scotland, opposite the town of Newburgh in Fife. It is low-lying and reedy, and covers an area of . It is the only significant island in the firth. The Tay splits into two channels h ...
in the
Firth of Tay The Firth of Tay (; ) is a firth on the east coast of Scotland, into which empties the River Tay (Scotland's largest river in terms of flow). The firth is surrounded by four council areas: Fife, Perth and Kinross, Dundee City, and Angus. ...
and
Inchcape Inchcape or the Bell Rock is a reef about off the east coast of Angus, Scotland, near Dundee and Fife, occupied by the Bell Rock Lighthouse. The name ''Inchcape'' comes from the Scottish Gaelic ''Innis Sgeap'', meaning "beehive isle", probabl ...
, a reef notoriously hazardous to ships off the
Angus Angus may refer to: *Angus, Scotland, a council area of Scotland, and formerly a province, sheriffdom, county and district of Scotland * Angus, Canada, a community in Essa, Ontario Animals * Angus cattle, various breeds of beef cattle Media * ...
coast. For a full list, see
List of outlying islands of Scotland The outlying islands of Scotland are not part of the larger archipelagos and island groups of Scotland—the Hebrides, the Northern Isles or the Islands of the Forth and Islands of the Clyde, Clyde estuaries. None of these islands are currentl ...
.


Geography

Furthest east is the
Isle of May An isle is an island, land surrounded by water. The term is very common in British English. However, there is no clear agreement on what makes an island an isle or its difference, so they are considered synonyms. Isle may refer to: Geography * Is ...
, off the coast of Fife south of
Crail Crail (; ) is a former royal burgh, parish and Community council#Scotland, community council area (Royal Burgh of Crail and District) in the East Neuk of Fife, Scotland. The locality has an estimated population of 1,630 (2018). Etymology The ...
. To the south in the outer Firth there is a group of islands off
East Lothian East Lothian (; ; ) is one of the 32 council areas of Scotland, as well as a Counties of Scotland, historic county, registration county and Lieutenancy areas of Scotland, lieutenancy area. The county was called Haddingtonshire until 1921. In ...
near
North Berwick North Berwick (; ) is a seaside resort, seaside town and former royal burgh in East Lothian, Scotland. It is situated on the south shore of the Firth of Forth, approximately east-northeast of Edinburgh. North Berwick became a fashionable holi ...
and
Gullane Gullane ( or ) is a town on the southern shore of the Firth of Forth in East Lothian on the east coast of Scotland. There has been a church in the village since the ninth century. The ruins of the Old Church of St. Andrew built in the twel ...
; from east to west they are the Bass Rock (also known simply as "The Bass"),
Craigleith Craigleith () is a small island in the Firth of Forth off North Berwick in East Lothian, Scotland. Its name comes from the Scottish Gaelic ''Creag Lìte'' meaning "rock of Leith". It is at its highest point. Geography and geology Craigleith is ...
,
Lamb Lamb or The Lamb may refer to: * A young sheep * Lamb and mutton, the meat of sheep Arts and media Film, television, and theatre * ''The Lamb'' (1915 film), a silent film starring Douglas Fairbanks Sr. in his screen debut * ''The Lamb'' (1918 ...
,
Fidra Fidra (archaically Fidrey or Fetheray) is a currently uninhabited island in the Firth of Forth, northwest of North Berwick, on the east coast of Scotland. The island is an RSPB Scotland nature reserve. Geography Like the other islands nea ...
and
Eyebroughy Eyebroughy (or archaically Ibris; NT493859) is a small, rocky islet in the Firth of Forth, 200 m off East Lothian, Scotland. Location Eyebroughy sits off the East Lothian coast, to the north northeast of the village of Gullane and west of No ...
. A second group lie in the inner Firth of Forth.
Inchkeith Inchmichael (Formerly Inchkeith) (from the ) is an island in the Firth of Forth, Scotland, administratively part of the Fife council area. In 2025, Newly appointed Independent Member of the Scottish Parliament in the Mid-Scotland and Fife ...
and
Inchcolm Inchcolm (from the Scottish Gaelic "Innis Choluim", meaning Columba's Island) is an island in the Firth of Forth in Scotland. The island has a long history as a site of religious worship, having started with a church, which later developed into ...
are off
Kinghorn Kinghorn (; ) is a town and parish in Fife, Scotland. A seaside resort with two beaches, Kinghorn Beach and Pettycur Bay, plus a fishing port, it stands on the north shore of the Firth of Forth, opposite Edinburgh. Known as the place where K ...
and
Aberdour Aberdour (; Scots: , ) is a scenic and historic village on the south coast of Fife, Scotland. It is on the north shore of the Firth of Forth, looking south to the island of Inchcolm and its Abbey, and to Leith and Edinburgh beyond. According ...
on the north shore,
Inchgarvie Inchgarvie or Inch Garvie is a small, uninhabited island in the Firth of Forth. On the rocks around the island sit four caissons that make up the foundations of the Forth Bridge. Inchgarvie's fortifications pre-date the modern period. In th ...
lies midway between
North North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography. Etymology T ...
and
South Queensferry Queensferry, also called South Queensferry or simply "The Ferry", is a town to the west of Edinburgh, Scotland. Traditionally a royal burgh of West Lothian, it is now administered by the City of Edinburgh Council. It lies ten miles to the nor ...
, and Inchmickery and
Cramond Island Cramond Island (Scottish Gaelic: ''Eilean Chair Amain'') is one of several islands in the Firth of Forth in eastern Scotland, near Edinburgh. It lies off the foreshore at Cramond. It is long and covers .Wilson, Rev. John ''The Gazetteer of Sc ...
are nearer to
Edinburgh Edinburgh is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. The city is located in southeast Scotland and is bounded to the north by the Firth of Forth and to the south by the Pentland Hills. Edinburgh ...
on the south shore. Alloa Inch and Tullibody Inch are furthest west in the estuarine waters of the River Forth. Only one of these islands, Inchcolm, has had a resident population in recent years, although there have been monasteries, hermitages, lighthouses and fortifications on most of them in the past. In the late 19th century, the Isle of May had a population of over 20.Haswell-Smith (2004) p. 490-94 Many of the island names have the first element, "Inch-" (from ''Innis'', the
Gaelic Gaelic (pronounced for Irish Gaelic and for Scots Gaelic) is an adjective that means "pertaining to the Gaels". It may refer to: Languages * Gaelic languages or Goidelic languages, a linguistic group that is one of the two branches of the Insul ...
word for "island").Mac an Tàilleir (2003) p. 64''Innis'' also means "meadow".


Geology

Geologically, most of the islands are the remnants of
igneous Igneous rock ( ), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rocks are formed through the cooling and solidification of magma or lava. The magma can be derived from partial ...
intrusions. The Isle of May's rock is "fine grained
basalt Basalt (; ) is an aphanite, 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 planetary surface, surface of a terrestrial ...
of a dark-grey colour with tinges of green and greenstone". Fidra is also largely basalt and The Bass is a
phonolite Phonolite is an uncommon shallow intrusive or extrusive rock, of intermediate chemical composition between felsic and mafic, with texture ranging from aphanitic (fine-grained) to porphyritic (mixed fine- and coarse-grained). Phonolite is a var ...
volcanic plug 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 risi ...
. Craigleith is a
laccolith A laccolith is a body of intrusive rock with a dome-shaped upper surface and a level base, fed by a conduit from below. A laccolith forms when magma (molten rock) rising through the Earth's crust begins to spread out horizontally, prying apart ...
made up of
essexite Essexite (), also called nepheline monzogabbro (), is a dark gray or black holocrystalline plutonic igneous rock. Its name is derived from the type locality in Essex County, Massachusetts, in the United States. Modern petrology identifies roc ...
which is popular for making
curling Curling is a sport in which players slide #Curling stone, stones on a sheet of ice toward a target area that is segmented into four concentric circles. It is related to bowls, boules, and shuffleboard. Two teams, each with four players, take t ...
stones and Cramond island is made up of
dolerite Diabase (), also called dolerite () or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine-grain ...
. Inchmickery and Inchgarvie are of igneous origin and the latter is partly made up of
picrite Picrite basalt or picrobasalt is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine. It is dark with yellow-green olivine phenocrysts (20-50%) and black to dark brown pyroxene, mostly augite. The olivine-rich ...
. Studies of the landscape beneath the waters of the firth have revealed that the visible surface of Inchgarvie is only the top of a larger
crag and tail A crag (sometimes spelled cragg, or in Scotland craig) is a rocky hill or mountain, generally isolated from other high ground. Origin Crags are formed when a glacier or ice sheet passes over an area that contains a particularly resistant r ...
structure similar in structure to
Edinburgh Castle Edinburgh Castle is a historic castle in Edinburgh, Scotland. It stands on Castle Rock (Edinburgh), Castle Rock, which has been occupied by humans since at least the Iron Age. There has been a royal castle on the rock since the reign of Malcol ...
and the
Royal Mile The Royal Mile () is the nickname of a series of streets forming the main thoroughfare of the Old Town, Edinburgh, Old Town of Edinburgh, Scotland. The term originated in the early 20th century and has since entered popular usage. The Royal ...
created by
glacial A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires ...
action. The tidal islet of Eyebroughy is about to the west of Fidra. Its component rock is
trachyte Trachyte () is an extrusive igneous rock composed mostly of alkali feldspar. It is usually light-colored and aphanite, aphanitic (fine-grained), with minor amounts of mafic minerals, and is formed by the rapid cooling of lava (or shallow intrus ...
and
Lower Carboniferous Lower may refer to: * ''Lower'' (album), 2025 album by Benjamin Booker *Lower (surname) *Lower Township, New Jersey *Lower Receiver (firearms) *Lower Wick Lower Wick is a small hamlet located in the county of Gloucestershire, England. It is sit ...
in origin. Most of Inchkeith is of volcanic origin but there are also sections of
sandstone Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
,
coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other Chemical element, elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal i ...
,
limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ...
and
shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of Clay mineral, clay minerals (hydrous aluminium phyllosilicates, e.g., Kaolinite, kaolin, aluminium, Al2Silicon, Si2Oxygen, O5(hydroxide, OH)4) and tiny f ...
, the last named containing numerous fossils. There are also several springs on the island. Inchcolm is similarly varied, consisting of greenstone, sandstone, shale and limestone.


Natural history

The Firth is an important area for
nature conservation Nature conservation is the ethic/moral philosophy and conservation movement focused on protecting species from extinction, maintaining and restoring habitats, enhancing ecosystem services, and protecting biological diversity. A range of values ...
and has a range of habitats including extensive mudflats, shingle shorelines and saltmarsh. The last named, which is well developed on Alloa Inch, is typically dominated by saltmarsh rush, sea club-rush,
sea aster ''Tripolium pannonicum'', called sea aster or seashore aster and often known by the synonyms ''Aster tripolium'' or ''Aster pannonicus'', is a flowering plant, native to Eurasia and northern Africa, that is confined in its distribution to salt ma ...
and common saltmarsh-grass."Firth of Forth SSSI Management Statement" (2004)
Scottish Natural Heritage NatureScot () is an executive non-departmental public body of the Scottish Government responsible for Scotland’s natural heritage, especially its natural, genetic and scenic diversity. It advises the Scottish Government on nature conservati ...
.
The inner Firth is important for nationally and internationally important numbers of wintering wildfowl and wading birds and hosts populations of
shelduck The shelducks, most species of which are found in the genus ''Tadorna'' (except for the Radjah shelduck, which is now found in its own monotypic genus ''Radjah''), are a group of large birds in the Tadorninae subfamily of the Anatidae, the biolog ...
,
knot A knot is an intentional complication in Rope, cordage which may be practical or decorative, or both. Practical knots are classified by function, including List of hitch knots, hitches, List of bend knots, bends, List of loop knots, loop knots, ...
, redshank,
great crested grebe The great crested grebe (''Podiceps cristatus'') is a member of the grebe family of water birds. The bird is characterised by its distinctive appearance, featuring striking black, orange-brown, and white plumage, and elaborate courtship displa ...
,
teal alt=American teal duck (male), Green-winged teal (male) Teal is a greenish-blue color. Its name comes from that of a bird—the Eurasian teal (''Anas crecca'')—which presents a similarly colored stripe on its head. The word is often used ...
and
goldeneye ''GoldenEye'' is a 1995 spy film, the seventeenth in the List of James Bond films, ''James Bond'' series produced by Eon Productions, and the first to star Pierce Brosnan as the fictional Secret Intelligence Service, MI6 agent James Bond (lit ...
. The outer islands support significant numbers of nesting
seabirds Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same envi ...
. The Bass Rock has more than 150,000 nesting northern gannets and is the largest single rock gannetry in the world. When viewed from the mainland much of the rock looks white due to the sheer number of birds (and their droppings, which give off 152 tonnes of
ammonia Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the chemical formula, formula . A Binary compounds of hydrogen, stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pu ...
per year). The scientific name of this gannet, ''Morus bassanus'', is derived from the rock. The bird was traditionally known locally as the solan goose, and its eggs and meat were considered delicacies. It is estimated that in 1850 almost 2000 birds were harvested from the rock. Other bird species on the rock include
guillemot Guillemot is the common name for several species of seabird in the Alcidae or auk family, part of the order Charadriiformes. In Europe, the term covers two genera, '' Uria'' and '' Cepphus''. In North America the ''Uria'' species are called mu ...
,
razorbill The razorbill (''Alca torda'') is a North Atlantic colonial seabird and the only extant member of the genus ''Alca (bird), Alca'' of the family Alcidae, the auks. It is the closest living relative of the extinct great auk (''Pinguinus impennis' ...
,
cormorant Phalacrocoracidae is a family of approximately 40 species of aquatic birds commonly known as cormorants and shags. Several different classifications of the family have been proposed, but in 2021 the International Ornithologists' Union (IOU) ado ...
,
puffin Puffins are any of three species of small alcids (auks) in the bird genus ''Fratercula''. These are pelagic seabirds that feed primarily by diving in the water. They breed in large colonies on coastal cliffs or offshore islands, nesting in crev ...
,
eider duck The eiders () are large Mergini, seaducks in the genus ''Somateria''. The three extant species all breed in the cooler latitudes of the Northern Hemisphere. The down feathers of eider ducks and some other ducks and geese are used to fill pillow ...
and numerous
gulls Gulls, or colloquially seagulls, are seabirds of the subfamily Larinae. They are most closely related to terns and Skimmer (bird), skimmers, distantly related to auks, and even more distantly related to waders. Until the 21st century, most gul ...
. Craigleith lies close to North Berwick's
harbour A harbor (American English), or harbour (Commonwealth English; see American and British English spelling differences#-our, -or, spelling differences), is a sheltered body of water where ships, boats, and barges can be Mooring, moored. The t ...
and historically was used as a
rabbit Rabbits are small mammals in the family Leporidae (which also includes the hares), which is in the order Lagomorpha (which also includes pikas). They are familiar throughout the world as a small herbivore, a prey animal, a domesticated ...
warren. The rabbits were bred for food but they were wiped out by
myxomatosis Myxomatosis is a disease caused by '' Myxoma virus'', a poxvirus in the genus '' Leporipoxvirus''. The natural hosts are tapeti (''Sylvilagus brasiliensis'') in South and Central America, and brush rabbits (''Sylvilagus bachmani'') in North ...
in the 1950s. The
Atlantic puffin The Atlantic puffin ('), also known as the common puffin, is a species of seabird in the auk family (biology), family. It is the only puffin native to the Atlantic Ocean; two related species, the tufted puffin and the horned puffin being found ...
colony on Craigleith, once one of the largest in Britain with 28,000 pairs, became endangered from 1999 onward, due to invasion of non-endemic
tree mallow ''Malva arborea'' (previously known as ''Lavatera arborea'', or, more recently as ''Malva eriocalyx''), the tree mallow, is a species of mallow native to the coasts of western Europe and the Mediterranean region, from Ireland and Britain south t ...
, which choked the puffins' burrows, preventing them from rearing their pufflings. A five-year project, SOS Puffin, led by the Scottish Seabird Centre at North Berwick, was launched early in 2007. Since then, hundreds of volunteers have been working hard to rid the island of the problem, ferried out by boat from the Seabird Centre during the winter months, when the puffins are at sea. There are signs that the puffins are starting to return to the island to breed. Fidra, Inchmickery and Eyebroughy are
RSPB The Royal Society for the Protection of Birds (RSPB) is a Charitable_organization#United_Kingdom, charitable organisation registered in Charity Commission for England and Wales, England and Wales and in Office of the Scottish Charity Regulator, ...
reserves, the last being noted for its cormorants. Over 240 species of bird and 60 varieties of seaweed have been recorded on the Isle of May.


History

Several of the islands contain pre-historic remains created by cultures whose names are unknown. They have also been affected by the successive influences of
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language *Celtic music *Celtic nations Sports Foot ...
, Norse and
English English usually refers to: * English language * English people English may also refer to: Culture, language and peoples * ''English'', an adjective for something of, from, or related to England * ''English'', an Amish ter ...
-speaking peoples during the historic period and this is reflected in their names. The islands also came under attack from
Vikings Vikings were seafaring people originally from Scandinavia (present-day Denmark, Norway, and Sweden), who from the late 8th to the late 11th centuries raided, pirated, traded, and settled throughout parts of Europe.Roesdahl, pp. 9â ...
during the early Historic period.


15th century

During the reign of
King James IV James IV (17 March 1473 – 9 September 1513) was King of Scotland from 11 June 1488 until his death at the Battle of Flodden in 1513. He inherited the throne at the age of fifteen on the death of his father, James III, at the Battle of Sauch ...
Inchkeith was the site of an extraordinary experiment. According to the historian Robert Lyndsay of Pitscottie, in 1493 James directed that a dumb woman and two infants be transported to the island, to ascertain which language the infants would grow up to speak when isolated from the rest of the world. It was thought that this would be the "original" language, or language of God. There is no reliable account of how the infants spoke although Lyndsay of Pitscottie reported that "some say they spoke good Hebrew". In 1497 Inchkeith and Inchgarvie were used as an isolated refuge for victims of
syphilis Syphilis () is a sexually transmitted infection caused by the bacterium ''Treponema pallidum'' subspecies ''pallidum''. The signs and symptoms depend on the stage it presents: primary, secondary, latent syphilis, latent or tertiary. The prim ...
and in 1589, history repeated itself when Inchkeith was used to quarantine the passengers of a plague-ridden ship. (More plague sufferers came from the mainland in 1609 and in 1799, Russian sailors who died of an infectious disease were buried there.) Inchcolm is mentioned in
Shakespeare's William Shakespeare ( 23 April 1564 – 23 April 1616) was an English playwright, poet and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's natio ...
''
Macbeth ''The Tragedy of Macbeth'', often shortened to ''Macbeth'' (), is a tragedy by William Shakespeare, estimated to have been first performed in 1606. It dramatises the physically violent and damaging psychological effects of political ambiti ...
'' where it is described as "Saint Colmes ynch".


English garrisons

Inchcolm was raided by English troops during the 14th century
Wars of Independence Wars of national liberation, also called wars of independence or wars of liberation, are conflicts fought by nations to gain independence. The term is used in conjunction with wars against foreign powers (or at least those perceived as foreign) ...
. In the 16th century Inchkeith, Inchcolm and Inchgarvie all suffered English occupation. The
Earl of Somerset Earl () is a rank of the nobility in the United Kingdom. In modern Britain, an earl is a member of the peerage, ranking below a marquess and above a viscount. A feminine form of ''earl'' never developed; instead, ''countess'' is used. The titl ...
garrisoned the islands in 1547 after the
Battle of Pinkie Cleugh The Battle of Pinkie, also known as the Battle of Pinkie Cleugh (), took place on 10 September 1547 on the banks of the River Esk, Lothian, River Esk near Musselburgh, Scotland. The last pitched battle between Scotland and England before the U ...
. His force of marines were ordered to reinforce Inchkeith, and they built a large square fort, with corner towers, on the site of the present day lighthouse. His forces, mainly Italian mercenaries, were ejected by a combined Franco-Scottish force under General D’ Essé in 1549.


Later fortifications

Only Inchcolm was fortified during the
Napoleonic Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led a series of mi ...
wars.
Inchkeith Inchmichael (Formerly Inchkeith) (from the ) is an island in the Firth of Forth, Scotland, administratively part of the Fife council area. In 2025, Newly appointed Independent Member of the Scottish Parliament in the Mid-Scotland and Fife ...
was fortified (along with
Kinghorn Kinghorn (; ) is a town and parish in Fife, Scotland. A seaside resort with two beaches, Kinghorn Beach and Pettycur Bay, plus a fishing port, it stands on the north shore of the Firth of Forth, opposite Edinburgh. Known as the place where K ...
) in 1880.
Inchgarvie Inchgarvie or Inch Garvie is a small, uninhabited island in the Firth of Forth. On the rocks around the island sit four caissons that make up the foundations of the Forth Bridge. Inchgarvie's fortifications pre-date the modern period. In th ...
was armed early in the 20th century. In the
First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
and the
Second World War World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
Inchmickery,
Inchcolm Inchcolm (from the Scottish Gaelic "Innis Choluim", meaning Columba's Island) is an island in the Firth of Forth in Scotland. The island has a long history as a site of religious worship, having started with a church, which later developed into ...
and
Cramond Island Cramond Island (Scottish Gaelic: ''Eilean Chair Amain'') is one of several islands in the Firth of Forth in eastern Scotland, near Edinburgh. It lies off the foreshore at Cramond. It is long and covers .Wilson, Rev. John ''The Gazetteer of Sc ...
formed part of a defensive line of guns covering anti-submarine booms across the river. There is no evidence to support the popular belief that the defensive structures on Inchmickery were designed to make the island look like a battleship from a distance: the structures were placed to provide the best fields of fire for the guns, and to squeeze in as much accommodation as possible for the garrison. These buildings were later used for filming scenes of the film ''
Complicity Complicity in criminal law refers to the participation in a completed criminal act of an accomplice, a partner in the crime who aids or encourages ( abets) other perpetrators of that crime, and who shared with them an intent to act to complete ...
''.


Ecclesiastical associations

Many of the islands were said to have
Culdee The Culdees (; ) were members of ascetic Christian monastic and eremitical communities of Ireland, Scotland, Wales and England in the Middle Ages. Appearing first in Ireland and then in Scotland, subsequently attached to cathedral or collegiate ...
connections, and had chapels on them. Various saints also have connections with the islands. St Thaney or Thenaw was reputedly the mother of St
Kentigern Kentigern (; ), known as Mungo, was a missionary in the Celtic Britons, Brittonic Kingdom of Strathclyde in the late sixth century, and the founder and patron saint of the city of Glasgow. Name In Wales and England, this saint is known by his b ...
and is said to have been cast adrift in an oarless coracle in deep waters beyond the Isle of May by her father King Leudonus, which resulted in an abundance of fish in the seas nearby. St Adrian of May was murdered there by invading Danes in 870 (who killed
St Monance St Monans (, ), sometimes spelt St Monance, is a village and parish in the East Neuk of Fife and is named after the legendary Saint Monan. Situated approximately west of Anstruther, the small community, whose inhabitants used to make their li ...
in the same raid). He was buried in a stone coffin on the island but is said to have floated across the Firth before coming to rest in a churchyard at
Anstruther Anstruther ( ; ) is a coastal town in Fife, Scotland, situated on the north-shore of the Firth of Forth and south-southeast of St Andrews. The town comprises two settlements, Anstruther Easter and Anstruther Wester, which are divided by a st ...
. The Isle of May has a long history of ecclesiastical activity and there are various remains including that of a 13th-century
Benedictine The Benedictines, officially the Order of Saint Benedict (, abbreviated as O.S.B. or OSB), are a mainly contemplative monastic order of the Catholic Church for men and for women who follow the Rule of Saint Benedict. Initiated in 529, th ...
church. The Irish missionary Saint
Baldred of Tyninghame Balthere of Tyninghame (later Baldred) was a Northumbrian hermit and abbot, resident in East Lothian during the 8th century. Dating According to Hovendeus the date of Baldred's death is given as 756. Symeon of Durham says "the twentieth year of Ki ...
resided on The Bass in the 8th century and there is a ruined 12th century chapel on Fidra dedicated to
St Nicholas Saint Nicholas of Myra (traditionally 15 March 270 – 6 December 343), also known as Nicholas of Bari, was an early Christian bishop of Greeks, Greek descent from the maritime city of Patara (Lycia), Patara in Anatolia (in modern-day Antalya ...
. Inchcolm has connections to St
Columba Columba () or Colmcille (7 December 521 – 9 June 597 AD) was an Irish abbot and missionary evangelist credited with spreading Christianity in what is today Scotland at the start of the Hiberno-Scottish mission. He founded the important abbey ...
and King
Alexander I Alexander I may refer to: * Alexander I of Macedon, king of Macedon from 495 to 454 BC * Alexander I of Epirus (370–331 BC), king of Epirus * Alexander I Theopator Euergetes, surnamed Balas, ruler of the Seleucid Empire 150-145 BC * Pope Alex ...
was marooned on the island, and decided to make it the site of an Augustinian
monastery A monastery is a building or complex of buildings comprising the domestic quarters and workplaces of Monasticism, monastics, monks or nuns, whether living in Cenobitic monasticism, communities or alone (hermits). A monastery generally includes a ...
.Haswell-Smith (2004) pp. 488–89 In the 7th century St
Adomnán Adomnán or Adamnán of Iona (; , ''Adomnanus''; 624 â€“ 704), also known as Eunan ( ; from ), was an abbot of Iona Abbey ( 679–704), hagiographer, statesman, canon jurist, and Christian saint, saint. He was the author of the ''Life ...
of Iona founded a "school of the prophets" on Inchkeith in the late 7th century having met
St Serf Saint Serf or Serbán (''Servanus'') () is a saint of Scotland. Serf was venerated in western Fife. He is called the apostle of Orkney, with less historical plausibility. Saint Serf is connected with Saint Mungo's Church near Simonburn, Northumbe ...
there. Inchmickery's name may be derived from the Gaelic for "island of the vicar".


Navigation

Many of the isles act as an aid to navigation. There are various
lighthouse A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lens (optics), lenses and to serve as a beacon for navigational aid for maritime pilots at sea or on inland waterways. Ligh ...
s and numerous devices to guide shipping in the busy waters near the ports of
Leith Leith (; ) is a port area in the north of Edinburgh, Scotland, founded at the mouth of the Water of Leith and is home to the Port of Leith. The earliest surviving historical references are in the royal charter authorising the construction of ...
and
Rosyth Rosyth () is a town and Garden City in Fife, Scotland, on the coast of the Firth of Forth. Scotland's first Garden city movement, Garden City, Rosyth is part of the Greater Dunfermline Area and is located 3 miles south of Dunfermline city cen ...
. In 1803, construction was begun of Inchkeith Lighthouse, designed and built by Thomas Smith and
Robert Stevenson Robert, Rob, or Bob Stevenson may refer to: * Robert Stevenson (civil engineer) (1772–1850), Scottish lighthouse engineer * Robert Louis Stevenson (1850–1894), Scottish writer ("Treasure Island"), grandson of lighthouse engineer Robert Stevenso ...
. The lighthouse stands 67 metres high and was operational by 1804. The Fidra light was built in 1885 and automated in 1970.Martine (1890) pp. 50–51 The light on the small rock of Oxcars was automated as early as 1894. At that time it was controlled by a clockwork timer and was powered using gas delivered weekly from Granton gasworks. A lighthouse was constructed on the Bass Rock in 1902. The Isle of May light has a long history having been in operation since 1635 when a crude coal-fired structure was erected. The existing building was constructed in 1816, which was converted to a "rock station" in 1972 and automated in March 1989. The island is owned by the Commissioners of the Northern Lights although managed by
Scottish Natural Heritage NatureScot () is an executive non-departmental public body of the Scottish Government responsible for Scotland’s natural heritage, especially its natural, genetic and scenic diversity. It advises the Scottish Government on nature conservati ...
as a national nature reserve. None of the islands are accessible by public transport except Inchcolm, which has a regular summer service.


List


Outer

The Isle of May is in the north of the outer Firth of Forth, about off the coast of mainland Fife. It is long, less than wide and has a total area of making it by far the largest of the Forth islands. Although often inhabited in the past nobody has been recorded as living there since the automation of the lighthouse."Isle of May"
Northern Lighthouse Board. Retrieved 5 September 2010.
Rona is a tidal islet to the north joined to the main island by a bridge. Further north are North Ness, the Mars Rocks and Norman Rock. Clett and the Middens are stacks to the east and The Pillow is a
skerry A skerry ( ) is a small rocky island, or islet, usually too small for human habitation. It may simply be a rocky reef. A skerry can also be called a low stack (geology), sea stack. A skerry may have vegetative life such as moss and small, ...
to the south east. Maiden Rocks and Maiden Hair lie just offshore to the south.Ordnance Survey maps. The Bass Rock is about offshore, and north-east of
North Berwick North Berwick (; ) is a seaside resort, seaside town and former royal burgh in East Lothian, Scotland. It is situated on the south shore of the Firth of Forth, approximately east-northeast of Edinburgh. North Berwick became a fashionable holi ...
. This steep-sided island is currently uninhabited, but was lived on for many centuries. It has a castle dating from the 14th century, which was later used as a prison and there are the remains of a chapel built circa 1491. The Lauder family owned the island for almost six centuries, and it now belongs to Sir Hew Dalrymple whose family purchased it in 1701. The rock features in various works of fiction, including
Robert Louis Stevenson Robert Louis Stevenson (born Robert Lewis Balfour Stevenson; 13 November 1850 – 3 December 1894) was a Scottish novelist, essayist, poet and travel writer. He is best known for works such as ''Treasure Island'', ''Strange Case of Dr Jekyll ...
's ''Catriona''. At in extent the Bass Rock is the second largest of the islands of the Forth. The Middens is a small stack that lies just offshore to the northwest. Craigleith lies north of North Berwick harbour. It was also purchased by Sir Hew Dalrymple, from North Berwick Town Council in 1814. The Lamb is an uninhabited island about 100m long by 50m wide, flanked by the skerries North Dog and South Dog. There are other skerries between it and the shore including Bubbly Buss, the Law Rocks and the Hummel Ridges. In February 2009, the island was bought by the Israeli paranormalist
Uri Geller Uri Geller ( ; ; born 20 December 1946) is an Israeli-British illusionist, magician, television personality, and self-proclaimed psychic. He is known for his trademark television performances of spoon bending and other illusions. Geller use ...
for £30,000. Fidra, archaically Fetheray, is north-west of North Berwick. Like the nearby islands it is the result of volcanic activity and has a substantial seabird population. It can be accessed via a primitive jetty on the eastern shore. It is said that R. L. Stevenson based his map of ''
Treasure Island ''Treasure Island'' (originally titled ''The Sea Cook: A Story for Boys''Hammond, J. R. 1984. "Treasure Island." In ''A Robert Louis Stevenson Companion'', Palgrave Macmillan Literary Companions. London: Palgrave Macmillan. .) is an adventure a ...
'' on the shape of Fidra. The island is also attended by companion islets called North Dog and South Dog and Castle Tarbet is another islet to the south separated from the main bulk at high tides.


Inner

Inchkeith is close to the shores of Fife. Its history has been dominated by religion, its use as a quarantine and military events (see above). It is currently owned by
Tom Farmer Sir Thomas Farmer (10 July 1940 – 9 May 2025) was a Scottish businessman who founded the Kwik Fit chain of garages and owned the Scottish football club Hibernian. Sir Tom was Chancellor of Queen Margaret University, Edinburgh from 2007 unti ...
, founder of Kwikfit, although he doesn't live there. Inchmickery lies about east of Inchkeith and it is about north of the city of Edinburgh. It is only about 100 metres by 200 metres in size. Rocks known as the Cow and Calf lie to the north and beyond that, about halfway to Inchcolm, are the Oxcars, a hazard identified by a permanent light. Incholm is the only island in the Firth with a recent resident population, of whom there were two in the 2001 census although there was no usually resident population recorded at the time of the 2011 census. There is a resident custodian employed by
Historic Scotland Historic Scotland () was an executive agency of the Scottish Government, executive agency of the Scottish Office and later the Scottish Government from 1991 to 2015, responsible for safeguarding Scotland's built heritage and promoting its und ...
who maintains the island and runs the shop during the summer. In the 14th century
John of Fordun John of Fordun (before 1360 – c. 1384) was a Scottish chronicler. It is generally stated that he was born at Fordoun, Mearns. It is certain that he was a secular priest, and that he composed his history in the latter part of the 14th ...
records the name as "Euomonia" (referring to the ''monasterium Sancti Columbe in insula Euomonia''). There are various skerries in the sea to the north including Swallow Craig, Car Craig, Meadulse and Craigdimas. Inchgarvie's name is from '' Innis Gharbhaidh'' which is Scottish Gaelic for "rough island" or possibly "Garbhach's island". This island has a long history of fortification and is now incorporated into the
Forth Bridge The Forth Bridge is a cantilever railway bridge across the Firth of Forth in the east of Scotland, west of central Edinburgh. Completed in 1890, it is considered a symbol of Scotland (having been voted Scotland's greatest man-made wonder in ...
. In 1878, foundations for
Thomas Bouch Sir Thomas Bouch (; 22 February 1822 – 30 October 1880) was a British railway engineer. He was born in Thursby, near Carlisle, Cumbria, Carlisle, Cumberland, and lived in Edinburgh. As manager of the Edinburgh and Northern Railway he introduc ...
's Forth Bridge were laid on Inchgarvie but after the Tay Bridge Disaster these plans were abandoned. When construction of the bridge recommenced in 1882, the west end of the island was extended with a pier and used as the foundation for one of the
cantilever A cantilever is a rigid structural element that extends horizontally and is unsupported at one end. Typically it extends from a flat vertical surface such as a wall, to which it must be firmly attached. Like other structural elements, a cantilev ...
s. The island was also used for a construction office and the castle buildings were re-roofed to accommodate workers. Some of the stone from the former castle was used to build the
caissons Caisson (French for "box") may refer to: * Caisson (engineering), a sealed underwater structure * Caisson (vehicle), a two-wheeled cart for carrying ammunition, also used in certain state and military funerals * Caisson (Asian architecture), a sp ...
of the bridge. Cramond Island in the Almond estuary is a
tidal island A tidal island is a raised area of land within a waterbody, which is connected to the larger mainland by a natural isthmus or man-made causeway that is exposed at low tide and submerged at high tide, causing the land to switch between being ...
that is in extent and is currently part of the
Dalmeny Dalmeny () is a village and civil parish in Scotland. It is located on the south side of the Firth of Forth, southeast of South Queensferry and west of Edinburgh city centre. It lies within the traditional boundaries of West Lothian, and ...
Estate. It lies about a mile from the shore and is a popular recreation area. The speed with which the water rises can catch visitors unawares, leaving them stranded. Alloa Inch is an island in the tidal reaches of the River Forth near
Alloa Alloa (Received Pronunciation ; Scottish pronunciation /ˈaloʊa/; , possibly meaning "rock plain") is a town in Clackmannanshire in the Central Lowlands of Scotland. It is on the north bank of the Forth at the spot where some say it ceases to ...
that consists of reed beds and salt marshes. There is a derelict farmhouse on the island and the
Scottish Wildlife Trust The Scottish Wildlife Trust () is a registered charity dedicated to conserving the wildlife and natural environment of Scotland. Description The Scottish Wildlife Trust has well over 46,000 members. The Scottish Wildlife Trust acquired its fi ...
has managed the island as a nature reserve since 1996. Just upstream is the smaller Tullibody Inch – both are part of the
Firth of Forth The Firth of Forth () is a firth in Scotland, an inlet of the North Sea that separates Fife to its north and Lothian to its south. Further inland, it becomes the estuary of the River Forth and several other rivers. Name ''Firth'' is a cognate ...
SSSI A Site of Special Scientific Interest (SSSI) in Great Britain, or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland, is a conservation designation denoting a protected area in the United Kingdom and Isle ...
, which also includes the
John Muir Country Park The John Muir Country Park is a country park near the village of West Barns, which is part of the town of Dunbar in East Lothian, Scotland. It is named after John Muir, a famous naturalist and geologist who was born in Dunbar and later emigrated ...
.


Smaller and former

There are various other small islets and skerries in the Firth. Along the north shore, from west to east, Preston Island near
Culross Culross (/ˈkurəs/) (Scottish Gaelic: ''Cuileann Ros'', 'holly point or promontory') is a village and former royal burgh, and parish, in Fife, Scotland. According to the 2006 estimate, the village has a population of 395. Originally, Culross ...
is an artificial former island. This reclaimed land was created c. 1800 for salt production. More land was then reclaimed using ash slurry from Longannet power station from 1970 onward and it is now part of the mainland. Just offshore are the Craigmore Rocks at , which were called "Kraig Maur" in Blaeu's Atlas. "Dow Kraig" on the same 17th century map appears to be under reclaimed land just along the coast south of Dunsyre House at Nearby
Rosyth Castle Rosyth Castle is a fifteenth-century ruined tower house on the perimeter of Rosyth Naval Dockyard, Fife, Scotland. It originally stood on a small island in the Firth of Forth accessible only at low tide, and dates from around 1450, built as a s ...
is a former tidal island"Rosyth Castle"
Undiscovered Scotland. Retrieved 9 September 2010.
and Long Craig is now part of the
Forth Road Bridge The Forth Road Bridge is a suspension bridge in Central Belt, east central Scotland. The bridge opened in 1964 and at the time was the List of longest suspension bridge spans, longest suspension bridge in the world outside the United States. ...
. There is another Long Craig south of Dalgety Bay and Haystack lies between it and Inchcolm. The Common Rocks are in Silversands Bay at
Aberdour Aberdour (; Scots: , ) is a scenic and historic village on the south coast of Fife, Scotland. It is on the north shore of the Firth of Forth, looking south to the island of Inchcolm and its Abbey, and to Leith and Edinburgh beyond. According ...
and West Vows, East Vows and another Long Craig lie off Kirkcaldy. Much farther along the coast there is another West Vows and East Vows at
Earlsferry Elie and Earlsferry is a coastal town and former royal burgh in Fife, and parish, Scotland, situated within the East Neuk beside Chapel Ness on the north coast of the Firth of Forth, eight miles east of Leven. The burgh comprised the linked vill ...
. The Carr Brigs are a hazard to shipping at the entrance to the Firth just off
Fife Ness Fife Ness () is a headland forming the most eastern point in Fife, Scotland. Anciently the area was called Muck Ross, which is a corruption of the Scottish Gaelic ''Muc-Rois'' meaning "Headland of the Pigs". It is situated in the area of Fife k ...
. There are fewer skerries on the south coast of the Firth. Little Ox lies off
Musselburgh Musselburgh (; ; ) is the largest settlement in East Lothian, Scotland, on the coast of the Firth of Forth, east of Edinburgh city centre. It had a population of as of . History The name Musselburgh is Old English language, Old English in ...
and the Black Rocks, including the Middle and Eastern Craigs lie just outside the Port of Leith.


See also

* * Scottish island names * Lamba – an island in Shetland *
Sula Sgeir Sula Sgeir is a small, uninhabited Scotland, Scottish islet in the North Atlantic, west of North Rona, Rona. One of the most remote islands of the British Isles, it lies approximately north of Isle of Lewis, Lewis and is best known for its ...
, an islet in the North Atlantic from which the men of
Ness, Lewis Ness () is the northernmost part of the Isle of Lewis, a community consisting of about 16 villages, including Lionel, Habost, Swainbost, Cross, North and South Dell, Cross Skigersta, Skigersta, Eorodale, Adabroc, Port of Ness, Knockaird, F ...
take an annual harvest of young northern gannets.


References and footnotes


Notes


Citations


General references

* * Howell, Henry Hyatt; Geikie, Archibald; and Salter, John William (1861) ''The Geology of the Neighbourhood of Edinburgh (Map 32)''. London. The Geological Survey of Great Britain. * Keay, J. & Keay, J. (1994) ''Collins Encyclopaedia of Scotland''. London: HarperCollins. * Martine, John (1890) ''Reminiscences and Notices of the Fourteen Parishes of the County of Haddington''. Edinburgh: * *
Ordnance Survey The Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see Artillery, ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of ...
(2009
"Get-a-map"
Retrieved 5–30 September 2010. * Watson, W. J. (1994) ''The Celtic Place-Names of Scotland''. Edinburgh: Birlinn. . First published 1926.


External links


Isle of May Ferry

Maid of the Forth
(ferry to Inchcolm and trips around the Forth)
"Forth Islands"
documentary film by Brian Cairney {{DEFAULTSORT:Islands Of The Forth
Forth Forth or FORTH may refer to: Arts and entertainment * ''forth'' magazine, an Internet magazine * ''Forth'' (album), by The Verve, 2008 * ''Forth'', a 2011 album by Proto-Kaw * Radio Forth, a group of independent local radio stations in Scotl ...
Forth Forth or FORTH may refer to: Arts and entertainment * ''forth'' magazine, an Internet magazine * ''Forth'' (album), by The Verve, 2008 * ''Forth'', a 2011 album by Proto-Kaw * Radio Forth, a group of independent local radio stations in Scotl ...