Rhos-y-Clegyrn standing stone is c.2.7m high. An excavation in 1962-68, indicated that the stone had been one of a pair, 10m apart, with a stony area, c.15m by 15m, containing a Bronze Age cremation, extending to the north; underlying this horizon, a cluster of seven structures/buildings, subcircular and rectangular, was identified. Radio-carbon dating of material from one of several pits associated with Bronze Age activity suggested a modern origin. Fenton records intrusive activity here (Fenton, Hist. Tour thru' Pembroke, 1811).

(sources: Lewis 1975 (AC123 (1974)), 13-42; Os495card; SM93NW24)
RCAHMW AP94-CS 0086
RCAHMW AP945007/65; 965045/48
J.Wiles 27.07.04