Kerrera ( ; or ''Cearrara''
[) is an island in the Scottish ]Inner Hebrides
The Inner Hebrides ( ; ) is an archipelago off the west coast of mainland Scotland, to the south east of the Outer Hebrides. Together these two island chains form the Hebrides, which experience a mild oceanic climate. The Inner Hebrides compri ...
, close to the town of Oban
Oban ( ; meaning ''The Little Bay'') is a resort town within the Argyll and Bute council area of Scotland. Despite its small size, it is the largest town between Helensburgh and Fort William, Highland, Fort William. During the tourist seaso ...
. In 2016 it had a population of 45, divided into two communities in the north and south of the island.
Geography
The island is around long and around wide, and is separated from the mainland by the Sound of Kerrera, about wide. The highest point on Kerrera is Carn Breugach at . The island is linked to the mainland by two ferry services. In the middle of the island, the Caledonian MacBrayne
Caledonian MacBrayne (), in short form CalMac, is the trade name of CalMac Ferries Ltd, the major operator of passenger and vehicle ferries to the west coast of Scotland, serving ports on the mainland and 22 of the major islands. It is a subsid ...
passenger ferry MV ''Carvoria'' operates from the Gallanach Road (about southwest of Oban). From the landing place, tracks lead to the scattered settlements in the centre and south of the island. The south end circular walking loop takes around 3 hours to walk. The northern tip of the island can be accessed by a separate marina ferry service operating from North Pier in the centre of Oban. The service runs to Oban Marina near Ardentrive Farm, which is now linked by a road to the rest of the island.
History
The island is known for the ruined Gylen Castle, a small tower house built in 1582. It was also the place where Alexander II of Scotland
Alexander II ( Medieval Gaelic: '; Modern Gaelic: '; nicknamed "the Peaceful" by modern historians; 24 August 1198 – 6 July 1249) was King of Alba (Scotland) from 1214 until his death. He concluded the Treaty of York (1237) which defined t ...
died in 1249. The artist J. M. W. Turner
Joseph Mallord William Turner (23 April 177519 December 1851), known in his time as William Turner, was an English Romantic painter, printmaker and watercolourist. He is known for his expressive colouring, imaginative landscapes and turbu ...
visited Kerrera in 1831 and made 25 sketches of the castle which are in the Tate Gallery
Tate is an institution that houses, in a network of four art galleries, the United Kingdom's national collection of British art, and international modern and contemporary art. It is not a government institution, but its main sponsor is the UK ...
, London.
Community
Most of the island is owned by the McDougalls of Dunollie, who are descended from the Norse-Gael Somerled
Somerled (died 1164), known in Middle Irish as Somairle, Somhairle, and Somhairlidh, and in Old Norse as Sumarliði , was a mid-12th-century Norse-Gaelic lord who, through marital alliance and military conquest, rose in prominence to create the ...
. The tidal island at the north-east tip of Kerrera, Rubh a' Chruidh, was sold for £426,000 in 2010 to Lanarkshire businessman David Hamilton.
In the 2011 census, Kerrera had a population of 34. However in 2019, residents said that the population had doubled to 68 people, including 18 children. There are no public buildings or facilities on the island (apart from two compost
Compost is a mixture of ingredients used as plant fertilizer and to improve soil's physical, chemical, and biological properties. It is commonly prepared by Decomposition, decomposing plant and food waste, recycling organic materials, and man ...
loos provided by the community). In July 2019, the Isle of Kerrera Development Trust community organisation purchased the old primary school building, close to the public ferry slip near the centre of the island; the building had been empty and deteriorating since closing in 1997. The community plans to restore the building into a multi-functional centre.
The main industries on the island are farming (sheep and Highland cattle) and tourism. There was an exotic bird sanctuary, closed . There is a tea room/café (Kerrera Tea Garden & Bunkhouse) at the south end near Gylen Castle but no shop and no pub. The castle itself was restored to some extent in 2006 and is open to the public.
In August 2021 work began to connect the small communities in the north and south of the island by road. A forestry track was initially constructed, and in October 2022 a metalled single track road was opened.
Geology
The oldest bedrock of Kerrera is black slate
Slate is a fine-grained, foliated, homogeneous, metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade, regional metamorphism. It is the finest-grained foliated metamorphic ro ...
ascribed to the Easdale Subgroup of the Dalradian Argyll Group. Overlying this across half of the island are conglomeratic 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 ...
s and 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 ...
and augite
Augite, also known as Augurite, is a common rock-forming pyroxene mineral with formula . The crystals are monoclinic and prismatic. Augite has two prominent cleavages, meeting at angles near 90 degrees.
Characteristics
Augite is a solid soluti ...
-andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomina ...
lava
Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a Natural satellite, moon onto its surface. Lava may be erupted at a volcano or through a Fissure vent, fractu ...
s of early Devonian
The Devonian ( ) is a period (geology), geologic period and system (stratigraphy), system of the Paleozoic era (geology), era during the Phanerozoic eon (geology), eon, spanning 60.3 million years from the end of the preceding Silurian per ...
age, the former being the local representative of the Old Red Sandstone
Old Red Sandstone, abbreviated ORS, is an assemblage of rocks in the North Atlantic region largely of Devonian age. It extends in the east across Great Britain, Ireland and Norway, and in the west along the eastern seaboard of North America. It ...
and the latter constituting part of the Lorne Plateau Lavas. Ripple mark
In geology, ripple marks are sedimentary structures (i.e., bedforms of the lower flow regime) and indicate agitation by water (Ocean current, current or wind wave, waves) or directly by wind.
Defining ripple cross-laminae and asymmetric ripples ...
s and sun cracks are preserved in 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 ...
strata on the south coast, belying the subaerial environment in which deposition of these sediments took place. There are thin 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) ...
s within both the Easdale Slate Formation and the younger sandstones. All of these strata are cut by NW-SE aligned 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 ...
dykes forming part of the North Britain Palaeogene Dyke Suite associated with early Palaeogene volcanism
Volcanism, vulcanism, volcanicity, or volcanic activity is the phenomenon where solids, liquids, gases, and their mixtures erupt to the surface of a solid-surface astronomical body such as a planet or a moon. It is caused by the presence of a he ...
. A number of geological faults cut across Kerrera, the majority are aligned NE-SW.
Modern beach deposits and raised marine deposits of Holocene
The Holocene () is the current geologic time scale, geological epoch, beginning approximately 11,700 years ago. It follows the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene to ...
age are found around the island particularly on the north coast and along the Sound of Kerrera.
Gallery
File:Kerrera Outline Map.svg, Outline map of Kerrera.
File:Kerrera from Oban.jpg, Sunset over Kerrera, viewed from Oban.
File:KerreraChurch2014.jpg, Disused school on Kerrera
References
External links
{{DEFAULTSORT:Kerrera
Islands of Argyll and Bute
Islands of the Inner Hebrides