This longhouse was built on an artificial terrace on the south southeast facing slope above the Nant Cwm y Fuwch, part of a settlement NPRN 54444. It measures approximately 13.5m east northeast to west southwest by 5.5 wide. The wall bases were 1m wide with an internal division 0.5m wide, 4.5m from the eastern end. J.J. Hall, Trysor, 16 March 2011