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
Lowther Hills Dalveen Pass and to the Lowther Hills beyond and for hill walkers they merge into the Queensberry Hills which lie between them and the Forest of Ae. Mitchellslacks, on the northern edge of the Forest Ae, and which provides access to Queensberry Hill, along with nearby Locherben, were the homes of the Harknesses involved in the Covenanter ambush. The Lowther Hills are one of the birthplaces of Scottish winter sports. Curling in the Lowthers can be traced back to 1777, when the Wanlockhead Curling Society –one of Scotland's first Curling societies- was created. Scotland's first boys' Curling club was established