To the north and east the adjoining ground is flat, but to the south and west it falls away steeply, providing a natural defence.

The camp consists of a single ditch with banks on either side and encloses and area measuring 390m by 490m.

A possible hut circle is visible as a cropmark situated at the south end of the hill fort.

The east side of the earthwork has been partly destroyed by the construction of a wartime airfield, RAF Membury.

The site is located at grid reference SU302753, to the southwest of the village and parish of Lambourn, in the county of Wiltshire and in part Berkshire.