The Bidean nam Bian in Glen Coe is a stunning geological display. This mountain and valley were formed over a period of 450 million years by clashes of continental plates, eight volcanoes and huge glaciers. Its peaks are called the Three Sisters. On the right is Aonach Dubh or Black Ridge. On the left is Gearr Aonach, also called the Short Ridge. Next to it (off camera) is the third sister, Beinn Fhada. The snowcapped ridge in the middle is Stob Coire nan Lochan. It has an elevation of 3,658 feet. You will want to stop at the car park along A82 to savor this view or to begin hiking along the trails.