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.
