Two massive walls, one partly eroded by the stream. The northerly of the two walls measures 7m long by 2m wide and stands 1.5m high, whilst the southerly mesasures 5m long by 1.2m wide and stands 4.5m high, also containing two colossal beam holes at 2m above the ground which may have been part of the crank system. Noted during an upland survey conducted by Archaeophysica during 2005-6