Royal Commission aerial reconnaissance on 10th December 2012 recorded extensive remains of denduded field lynchets and field terraces to the south-west of the Pen-y-gaer defended settlement. In particular, the field terraces focus on a previously unrecorded circular platform, probably the vestiges of a hut circle settlement, at SN 5453 6433, of c.15m diameter and marked by a slight kink in the field wall which runs across it; there is potentially the remains of a second of more denuded character some 100m to the south-east. It is clear that the field systems here are wide-spreading and provide a context for the more prominent and visible defended enclosures and settlements close by.

T. Driver, RCAHMW, 2013.