It is described in the Caernarvonshire Inventory, Vol. II, 171, (1147). Mound of burnt stone near Hafod-uchaf, at 800ft above OD. The horseshoe-shaped mound faces NW towards a small stream, now dry. It measures 30ft by 35ft with traces of a stone revetment on the NE and SE. Condition: good. OAN Site visit 2007. A burnt mound marked on the current OS mapping. It consists of an obvious kidney-shaped mound sat adjacent to a watercourse. It measures 13m long by 8m wide and is up to 1m high. The site is marked on the current OS mapping.