Cadw SAM No.=GM027
An oval cairn, 18.3m by 13.1m and 0.6m high. An 'inner cairn' of more massive stones and possibly kerbed, 12.4m by 6.1m, has a ruined chamber at its W end.
(source Os495card; SS48NW2)
RCAHMW 1976, An Inventory of the Ancient Monuments in Glamorgan, Volume 1, Part 1. Site Number 32, Figure 5 and Plate 2.