Brimsdown Hill () is a 193.7 hectare biological Site of Special Scientific Interest in Wiltshire, notified in 1951. It is situated within the Cranborne Chase and West Wiltshire Downs Area of Outstanding Natural Beauty.j, See also Long Knoll Heath Hill Farm Sources Natural England citation sheet for the site (accessed 22 March 2022) External links Natural England website (SSSI information) Sites of Special Scientific Interest in Wiltshire Sites of Special Scientific Interest notified in 1951 Hills of Wiltshire