Parc-y-domen is a Scheduled Ancient Monument, and is situated some 100m south-west of St Llawddog's Church (NPRN 309895), which may have been contemporary. Measurements of the motte are given as 5.2m high and 42m diameter. There are traces of a silted-up ditch, but no sign of a bailey.

RCAHMW, 5 February 2013