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The following list enumerates and expands on notable sea stacks, including former sea stacks that no longer exist.
(coastal countries only)
Mellor (2020) lists 70 stacks in England, 10 in Wales and 275 in Scotland of which circa 110 are located around the coasts of Shetland. [1]
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 fjord, which has a more constrained sense in English. Bodies of water named "firths" tend to be more common on the Scottish east coast, or in the southwest of the country, although the Firth of Clyde is an exception to this. The Highland coast contains numerous estuaries, straits, and inlets of a similar kind, but not called "firth" ; instead, these are often called sea lochs. Before about 1850, the spelling "Frith" was more common.
A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology. They are formed when part of a headland is eroded by hydraulic action, which is the force of the sea or water crashing against the rock. The force of the water weakens cracks in the headland, causing them to later collapse, forming free-standing stacks and even a small island. Without the constant presence of water, stacks also form when a natural arch collapses under gravity, due to sub-aerial processes like wind erosion. Erosion causes the arch to collapse, leaving the pillar of hard rock standing away from the coast—the stack. Eventually, erosion will cause the stack to collapse, leaving a stump. Stacks can provide important nesting locations for seabirds, and many are popular for rock climbing.
Sutherland is a historic county, registration county and lieutenancy area in the Highlands of Scotland. Its county town is Dornoch. Sutherland borders Caithness and Moray Firth to the east, Ross-shire and Cromartyshire to the south and the Atlantic to the north and west. Like its southern neighbour Ross-shire, Sutherland has some of the most dramatic scenery in Europe, especially on its western fringe where the mountains meet the sea. These include high sea cliffs and very old mountains composed of Precambrian and Cambrian rocks.
The Northern Isles are a chain of islands off the north coast of mainland Scotland. The climate is cool and temperate and highly influenced by the surrounding seas. There are two main island groups: Shetland and Orkney. There are a total of 36 inhabited islands, with the fertile agricultural islands of Orkney contrasting with the more rugged Shetland islands to the north, where the economy is more dependent on fishing and the oil wealth of the surrounding seas. Both archipelagos have a developing renewable energy industry. They share a common Pictish and Norse history, and were part of the Kingdom of Norway before being absorbed into the Kingdom of Scotland in the 15th century. The islands played a significant naval role during the world wars of the 20th century.
Terceira is a volcanic island in the Azores archipelago, about a third of the way across the North Atlantic Ocean at a similar latitude to Portugal's capital Lisbon, and the island group is owned by Portugal. It is one of the larger islands of the archipelago, with a population of 53,311 inhabitants in an area of approximately 396.75 km².
Motu Nui is the largest of three islets just south of Easter Island and is the westernmost place in Chile. All three islets have seabirds, but Motu Nui was also an essential location for the Tangata manu cult which was the island religion between the moai era and the Christian era. Motu Nui is the summit of a large volcanic mountain which rises over 2,000 meters from the sea bed. It measures 3.9 hectares in land area and is the largest of the five satellite islets of Easter island. It is one of three islands that is closest to Point Nemo, the place in the ocean that is farthest from land, the other two being Ducie Island, one of the Pitcairn Islands, and Maher Island in Antarctica.
The geography of Scotland is varied, from rural lowlands to unspoilt uplands, and from large cities to sparsely inhabited islands. Located in Northern Europe, Scotland comprises the northern part of the island of Great Britain as well as 790 surrounding islands encompassing the major archipelagos of the Shetland Islands, Orkney Islands and the Inner and Outer Hebrides. The only land border is with England, which runs for 96 miles in a northeasterly direction from the Solway Firth in the west to the North Sea on the east coast. Separated by the North Channel, the island of Ireland lies 13 nautical miles from Mull of Kintyre on the Scottish mainland. Norway is located 190 nmi (350 km) northeast of Scotland across the North Sea. The Atlantic Ocean, which fringes the coastline of western and northern Scotland and its islands, influences the temperate, maritime climate of the country.
In geology, the term Torridonian is the informal name for the Torridonian Group, a series of Mesoproterozoic to Neoproterozoic arenaceous and argillaceous sedimentary rocks, which occur extensively in the Northwest Highlands of Scotland. The strata of the Torridonian Group are particularly well exposed in the district of upper Loch Torridon, a circumstance which suggested the name Torridon Sandstone, first applied to these rocks by James Nicol. Stratigraphically, they lie unconformably on gneisses of the Lewisian complex and their outcrop extent is restricted to the Hebridean Terrane.
The coastline of the United Kingdom is formed by a variety of natural features including islands, bays, headlands and peninsulas. It consists of the coastline of the island of Great Britain, the north-east coast of the island of Ireland, as well as many much smaller islands. Much of the coastline is accessible and quite varied in geography and habitats. Large stretches have been designated areas of natural beauty, notably the Jurassic Coast and various stretches referred to as heritage coast. They are both very long, spreading through the mainland.
Orongo is a stone village and ceremonial center at the southwestern tip of Rapa Nui. It consists of a collection of low, sod-covered, windowless, round-walled buildings with even lower doors positioned on the high south-westerly tip of the large volcanic caldera called Rano Kau. Below Orongo on one side a 300-meter barren cliff face drops down to the ocean; on the other, a more gentle but still very steep grassy slope leads down to a freshwater marsh inside the high caldera.
Tsunamis affecting Britain and Ireland are extremely uncommon, and there have only been two confirmed cases in recorded history. Meteotsunamis are somewhat more common, especially on the southern coasts of England around the English and Bristol Channels.
St Magnus Bay is a large coastal feature in the north-west of Mainland Shetland, Scotland. Roughly circular in shape with a diameter of about 19 kilometres (12 mi), it is open to the North Atlantic Ocean to the west. The indented coastline to the north, south and east between Esha Ness in the north and the Ness of Melby in the south contains numerous bays, firths and voes and there are several islands around the perimeter. The waters of the bay are up to 165 metres (541 ft) deep and may have been the site of a substantial meteor impact.