Ring of Brodgar

There were once two mounds by the ring, excavated away by James Farrar in 1861 [or the remains flattened later]. Though he placed these at the west and east sides he more specifically locates them at the NW and NE extremities. An indication of their height is that his men dug 22’ deep vertical trenches into the subsoil, the former nine feet square and the latter thereabouts. The only finds from the mounds themselves were animal bones, mostly in the upper parts, but deeply embedded stones were found around the bases.
source : July 27th 1861 “The Orcadian”