The hill is one of a series of parallel crag and tail formations (including Abbey Craig, Stirling Castle, Kings Park, and Sauchie Craig) that march across the Carse of Stirling between the Touch Hills and the Ochil Hills. These formations were created by the movement of glaciers over the carse shaping the more resistant (usually volcanic) plugs into cliff-like crags (craig in Scots) with trailing wakes of softer material called tails.