A cairn is located on a natural hillock overlooking the Aman valley at 307m above O.D. It measures 20m in diameter and 1.75m in height. The mound is composed of mixed grade stones consolidated with grasses and heather.
Towards the N edge of the mound there lies a crater, 5m in diameter and 1m deep.
David Leighton, RCAHMW, 2001

Remains of a burial cairn, probably dating to the Bronze Age, situated on a prominent local knoll on the open moorland of Mynydd Isaf. Grass covered and circular on plan, measuring about 17m in diameter and up to 1/2m in height. Much scattered stone covers the slopes of the natural knoll upon which the cairn has been built.
Source: Cadw scheduling description. 04/10/2004/RCAHMW/FF