Earthworks of two later Prehistoric type roundhouses at Hafod-y-Rhos, are set 7.5m apart on rocky sloping ground. The roundhouses, about 7.8m and 6.5m internal diameter, are represented by circular stony banks some 0.7m high. Three roundhouses were noted in 1937 and a dozen were said to have been recently cleared in 1868.

Source: Stanley in Archaeologia Cambrensis 3rd series XIV (1868), 394-5
RCAHM Anglesey Inventory (1937), 28

John Wiles 15.08.07