A large enclosure or field system on the southeast side of Cwm Cwareli. It is defined by an earth and stone bank on three sides but its southwest side was to be defined by a small stream. The enclosure measured a maximum of 380m northwest-southeast by 100m. Platform NPRN 246103 lay within it and it has been recorded as part of NPRN 275462. J.J. Hall, Trysor, 11 December, 2008.