This cairn on the eastern side of the minor road across Merthyr Common measures 16.8m in overall diameter. It is defined by an encircling bank of stones 2.5m wide and 0.4m high on the west, diminishing to 1.8m wide and 0.3m high on the east. Whether a robbed round cairn or possible ring cairn is uncertain. Previously surveyed in 1960 and 1979.
A centrally placed electricity pole has been sawn off at the base. When the area was surveyed as part of the Uplands Initiative by Trysor in 2012 vegetation cover was grass and moss. RCAHMW APs 945107/47-8

J.J. Hall, Trysor, 24 January 2013