Bugle Quarry is a 0.08-hectare (0.20-acre) geological Site of Special Scientific Interest in Hartwell in Buckinghamshire.
The local planning authority is Aylesbury Vale District Council.
In 1958 it was filled by the spoil from road improvements, but in the following year a section was re-exposed by geologists from Queen Mary College, London.
[3] It was formerly the type section for the Portland (Tithonian) and Purbeck (Berriasian) Groups in the Aylesbury area;[5] it has yielded an important sequence of ostracod fauna which spans the junction between the two stages, and the environmental change from land to sea.
[1] The site is in the grounds of Hartwell Riding Stables with no public access.