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
South Soufriere Hills and the Soufrière Hills stratovolcano. It ranges in elevation from 200 to 750 m above sea level and contains tropical evergreen forest. Other IBAs on the island are the Northern Forested Ghauts and Centre Hills. The IBA was identified as such by BirdLife International because it supports, populations of bridled quail-doves, green-throated caribs, Antillean crested hummingbirds, scaly-breasted thrashers, pearly-eyed thrashers, brown tremblers, forest thrushes, Montserrat orioles and Lesser Antillean bullfinches. South Soufriere Hills South Soufriere Hills is a 35 ha patch of forest on the island of Montserrat, a British Overseas Territory in the Leeward Islands of the Caribbean Sea.