A well-preserved hut, of drystone construction on the south side of the Nant Tarthwynni, measuring 5.5m east-west x 4.5m. The walls stand up to 1.2m high x 0.75m wide. There is an entrance in the eastern wall, and along the inside of the northern wall, a stone bench has been constructed. It is possibly a shepherd's hut. Vegetation in July 2008 was bracken. J.J. Hall, Trysor, 21 October 2008.