Site description from Coflein:
“Cwm Bran Camp is a relatively large, 124m by 96m, oval hillslope enclosure, defined by a ploughed-down bank and ditch, with an entrance on the NW, up-slope, side.”
coflein.gov.uk/en/site/304516/details/CWM+BRAN+CAMP%3B+CEFN-Y-GAER%2C+ENCLOSURE/