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
Hills in the Puget Lowland counties) Whidbey Island and Camano Island are islands in Puget Sound and form the bulk of Island County. The Blue Hills of the Kitsap Peninsula are unusual in that they are composed of basalt bedrock, not glacial till. Bainbridge Island is an island in Puget Sound. Landforms in South Puget Sound (Thurston and Mason counties) The Issaquah Alps Bellevue, Issaquah and Newcastle on the Eastside are considered part of the Cascades foothills by many authors. They are basalt intrusions possibly related to the Blue Hills of the Kitsap Peninsula. Highest point Tiger Mountain summit, . The Anacortes Community Forest Lands