It was formerly part of the Stanmore and Harrow Weald Commons and Bentley Priory SSSI .
Harrow Weald SSSI is a 3.7 hectare ( 9 acre ) geological Site of Special Scientific Interest in Harrow Weald in the London Borough of Harrow .
Harrow Weald SSSI was formerly part of the Stanmore and Harrow Weald Commons and Bentley Priory SSSI .
Harrow Weald SSSI is a 3.7 hectare ( 9 acre ) geological Site of Special Scientific Interest in Harrow Weald in the London Borough of Harrow .