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Scotland, United Kingdom (56.78611 -4.11405)
A significant exception to the above are the fossil-bearing beds of Old Red Sandstones found principally along the Moray Firth coast. The Highlands are generally mountainous and the highest elevations in the British Isles are found here. Scotland has over 790 islands divided into four main groups: Shetland, Orkney, and the Inner Hebrides and Outer Hebrides. There are numerous bodies of freshwater including Loch Lomond and Loch Ness. Some parts of the coastline consist of machair, a low-lying dune pasture land.
The Southern Uplands are a range of hills almost 200 kilometres (124 mi) long, interspersed with broad valleys. They lie south of a second fault line (the Southern Uplands fault) that runs from Girvan to Dunbar. The geological foundations largely comprise Silurian deposits laid down some 400–500 million years ago. The high point of the Southern Uplands is Merrick with an elevation of 843 m (2,766 ft). The Southern Uplands is home to Scotland's highest village, Wanlockhead (430 m or 1,411 ft above sea level).
Because of their topography and perceived remoteness, parts of Scotland have housed many sensitive defence establishments. Between 1960 and 1991, the Holy Loch was a base for the US fleet of Polaris ballistic missile submarines. Today, Her Majesty's Naval Base Clyde, 25 miles (40 kilometres) north-west of Glasgow, is the base for the four Trident-armed Vanguard-class ballistic missile submarines that comprise the UK's nuclear deterrent. Scapa Flow was the major Fleet base for the Royal Navy until 1956.