Bonaly is an area on the south-western outskirts of Edinburgh and the northern slopes of the Pentland Hills, lying within the Parish of Colinton. It is a mix of mainly post-war housing, woodland, pasture-land and heather moorland. Bonaly Burn has its sources in the hills above Bonaly and flows towards Oxgangs, where it becomes the Braid Burn. The Edinburgh City Bypass passes through Bonaly.