A sub-circular enclosure is located upon the summit of Hatterrall Hill. It measures about 50m in diameter and is defined by a stone wall about 5m wide. There is an entrance to the east, obscured by a recent cairn.
The site has been associated with the cross-ridge wall (Nprn306448) some 600m to the south-west as both are of a similar build.
Source: OS record card SO32NW12).