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. Location Corstorphine Hill is located approximately west of Edinburgh's city centre. It is surrounded by residential suburbs, in particular by Barnton and Davidson's Mains to the north, Blackhall and Murrayfield to the east, Clerwood and Clermiston to the west, and Corstorphine to the south. Physical features The hill is a prominent feature of Edinburgh’s skyline. It appears as a long, low, L-shaped ridge, extending about in length from north to south and rising to . The upper slopes, which are heavily wooded, form a local nature reserve (LNR), managed by the City of Edinburgh Forestry and Natural Heritage Service and the Friends of Corstorphine Hill. It is the largest urban woodland in the city. By contrast, parts of the lower slopes have been built on, particularly in the south and west. The area between Kaimes Road and Clermiston Road is largely residential, consisting mainly of bungalows and small villas. Other buildings on the hill include Fox Covert Primary School, two large hotels (Capital Moat House and Holiday Inn), St Andrew's Clermiston Church, St Anne's Parish Church and the Spire Murrayfield Hospital. Some of the southern slopes are occupied by Edinburgh Zoo. Corstorphine Hill is one of Edinburgh's traditional "Seven Hills", an allusion to the Seven Hills of Rome. It is the fourth highest of the seven. Woodlands The LNR consists of three broad types of woodland. There are about of oak and birch woods into which sycamore and beech have been introduced. Some of mixed broadleaf woodland are present, composed primarily of native ash, oak and elm into which sycamore, lime, Norway maple, horse chestnut, sweet chestnut, beech and various conifers have been introduced. And there are about of more formal policy woodland originally associated with Hillwood House and Calderwood House, and composed