This longhouse that measures 12.5m long and 7m wide and is situated upon a plateau that overlooks the western end and central area of the Nantlle valley. The grassed over and denuded drystone walls comprise of medium to large unworked stones that have been built into irregular courses that measure 0.80m wide and 0.20m high. A sub-rectangular annex which measures 6m long by 3m wide creates an L-shaped form for the overall building. The longhouse is overlain by a sub-rectangular two celled sheep fold that is 5.5m long and 3.5m wide. The double-thickness drystone walls measure 0.70m wide and 0.60m high. P.J. Schofield, Oxford Archaeology North, 3rd February 2006