A partial castle ringwork is located on a steep-sided spur projecting from high ground above the flood-plain of the Usk. A roughly semi-circular area measuring 16.5m (NW-SE) by 13m is bounded on the north-east by the scarp edge, the top of a steep, wooded slope, and elsewhere by a bank 10m-12m wide and up to 3m high above an external rock-cut ditch 1.5m deep and 2m wide at base. Internally the bank is 1.5m high on the north-west but only 0.4m on the south-east where the slope of the nose of the ridge steepens markedly. A 4.5m gap on the south-east between the end of the bank and the scarp edge is probably the site of the entrance.
David Leighton, RCAHMW, 19 April 1999