Win Green Down (277 metres (909 ft), grid reference ST927209) is a 26.0 hectare biological Site of Special Scientific Interest in Wiltshire, notified in 1971. The summit, Win Green, is at grid ST924205 and is the highest point of Cranborne Chase. There are extensive views, with Bournemouth, the Isle of Wight, Salisbury, and Glastonbury Tor, the Mendips and the Quantock Hills all visible in clear conditions.