The easternmost of two earthworks (see also 91973) located on enclosed land at the edge of Gelligaer Common. It is a square enclosure measuring 24m across defined by a discontinuous bank 4m wide and 0.2m high. Entrances may be represented by gaps in the east and west sides. Similar earthworks are located nearby (NPRNs 225493-5; 308506).
Additional source: OS record ST19NW17.

D.K.Leighton, RCAHMW, September 1991