1. Castell Carreg-Wen is a small, pear-shaped fort, overall 62m x 83m, marked on earliest 1-inch plans, was rediscovered by Ordnance Survey staff. Earthwork comprises a slight bank c.20m x 0.7m high overall, with an east facing entrance and an oblique cutting through the rampart on the south side. Strongly sited on the leading edge of a long ridge, with precipitous slopes on all but the north-east side, looking out to the south-west over the valley of the Nant Magwr.

Hogg and Davies, Cardiganshire County History 1994, 263.

T Driver, RCAHMW.

2. RCAHMW aerial reconnaissance in December 2007 identified the denuded remains of an ancillary enclosure, lying some 200m west of the fort (NPRN 412422).

T. Driver, RCAHMW, 04/01/11