A shattered monolith is located just off the south edge of a road, set back from it about 3m in what is now a ditch between the road and an old field bank which forms part of a forestry boundary.
The stone is in three (visible) pieces. The largest is 1m high, 0.7m wide and 0.5m thick. Two much smaller pieces have become detached from each of two sides of the stone.
The stone is portrayed on Lewis Morris's map of 1744 where it is named Maen Tarw. About 100m along the road to the east is Buwch a'r Llo standing stone pair (NPRN 301687) which is not shown on the 1744 map. However, the latter are shown on Gogerddan Estate map of 1788, annotated `Maen Tarw?.

David Leighton, RCAHMW, 7 February 2013