Corstorphine Hill is a low ridge-shaped hill rising above the western suburbs of Edinburgh, Scotland. Although there has been residential and commercial development on its lower slopes, especially in the south and west, most of the hill is occupied by a local nature reserve, consisting of extensive broadleaf woodland, and is accessible to the public. The hill, which is composed largely of dolerite, was formed by the west-to-east movement of glaciers during the Pleistocene period. There is evidence of prehistoric settlement. Today the hill is popular with walkers, dog-walkers and joggers. Among its interesting features are a 19th-Century tower, a walled garden and a Cold War bunker.