Scottish Highlands in the Torridon Hills such as Liathach and Beinn Eighe in Wester Ross. These foundations are interspersed with many igneous intrusions of a more recent age, the remnants of which have formed mountain massifs such as the Cairngorms and the Cuillin of Skye. A significant exception to the above are the fossil-bearing beds of Old Red Sandstone found principally along the Moray Firth coast and partially down the Highland Boundary Fault. The Jurassic beds found in isolated locations on Skye and Applecross reflect the complex underlying geology. They are the original source of much North Sea oil. The Great Glen
Scottish island names oldest known form of the Goidelic languages, which is known only from fragments, mostly personal names, inscribed on stone in the Ogham alphabet in Ireland and western Britain up to about the 6th century. The Beurla-reagaird is a Gaelic-based cant of the Scottish travelling community. Old Norse is a North Germanic language that was spoken by inhabitants of Scandinavia and of their overseas settlements during the Viking Age, until about 1300. Its influence on Scots island names is considerable due to the development of both the Earldom of Orkney and the Kingdom of the Isles which resulted in almost all