Tomen Cefncoch is a ditched mound, 39m in diameter and 7.0m high, with a summit diameter of 10m. The ditch, 5.0m across, is best preserved on the west.

There is no trace of a bailey, although a subrectangular banked enclosure is set rather to the north-east (Nprn309676).

(source Os495card; SJ12NW8)
RCAHMW AP945109/44; 955007/54-5; 955008/56-7; 965097/43
J.Wiles 18.12.03