A subcircular cairn, 15 metres north to south by 14 metres, 1.2 metres high, set on the west summit of Garn Gron, apparently touched on its northeast side by Gwys-yr-Ychain-Banog linear boundary bank (NPRN 303652); a central hollow contains a large slab, perhaps possible cist elements.

J. J. Hall, Trysor, 3rd February 2013