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
Pentland Hills Pentland Hills The Pentland Hills are a range of hills to the south-west of Edinburgh, Scotland. The range is around 20 miles (32 km) in length, and runs south west from Edinburgh towards Biggar and the upper Clydesdale. Some of the peaks include: The hills span a number of council regions: from the City of Edinburgh and Midlothian in the north, south-west through West Lothian to the Scottish Borders and South Lanarkshire. The Pentland Hills Regional Park was designated in 1986. It covers an area of 90 km² (35 sq mi) at the northern end of the hills. The park,