A double stone row thought to be of prehistoric date comprises 35 surviving stones, of which 7 are recumbent. The original arrangment may have inlcuded 64 stones. They now stand at a distance of 9m between rows as slabs set on edge and in line averaging 0.15m thick, 0.5m long and 0.4m high.
A sinuous double row of set stones lies across the summit area of a moorland ridge. Its origins and function are obscure but it may be associated with military activity, possibly a trackway.