Enclosure to the east of Pen y castell hillfort (NPRN 303578), visible as a cropmark on aerial photographs showing a single arc of the east side of an oval enclosure, measuring c.68 n/s. There is a possible gateway in the ditch towards northern end, with a detached length of straight ditch leading away from it to the northeast.

Recorded during RCAHMW aerial reconnaissance. Nothing visible at ground level.

T Driver, RCAHMW 2012.