OPT purchased the land at Lincombe Lane in three lots between 1937 and 1940 from Abingdon Rural District Council. 

The space offers extensive views of Didcot and the Berkshire Downs to the south, and of Princes Risborough and the Chiltern Hills to the east. The upper part of the space is the field which is grassland / heathland and grazed. The lower part, the reserve, is valley fen covered with woodland which is over a century old. The area is a Local Wildlife Site because of the unimproved grassland and wet flush, valley fen, which are both rare in Oxfordshire.

A map of 1886 shows the land as open hills with Rye Hill Barns occupying the site of what were once Roman Pottery kilns. 

Lincombe Lane field is open to the public, the reserve is not currently accessible.