A "D" shaped enclosure, c.124m NE-SW by 74m, upon an isolated summit, defined by a stony scarp, or bank, except where the straight SE side rests on steep natural slopes.
(source OS 495 card; SH23NE5)
J.Wiles, RCAHMW, 07.03.2003

Commenting as part of the crowd-sourced project Crwydro in 2014, Tim Jones noted that the stone wall is now almost buried.
(Source: Crwydro 01.08.2014)