This standing stone is the largest stone in a short alignment of stones, and one element in a complex of monuments (NPRN 95) which includes a stone circle (412996) and an avenue of low upright stones (412999). The stone lies some 10m north of the circle on a slight erosion hollow. It is 1.9m high, 1.2m wide on the east, 1.4m wide on the west, and 0.9m thick. It is oriented due N-S and its base packed with stones.
About 3m north of the monolith are two small upright stones, and 9.5m to the west a similar stone. These protrude only slightly above the grass and may be naturally set.

Brecknock Inventory (i), 1997, p.150-3

RCAHMW, 10 February 2011