1. The cropmark of a concentric antenna enclosure at Pen-y-Waun measures c.150m across overall, the outer circuit being somewhat irregular; the subrectangular inner ditched circuit is c.47m N-S by 33-45m, the entrance being on the east.

J.Wiles 02.03.04

2. The emerging parchmark of this concentric antenna enclosure was recorded during the 2018 drought on 4th July 2018.

T. Driver, RCAHMW, Jan 2019