A slate boundary stone with a triangular head, flat front and sides splayed towards the rear, 0.66m high, 0.28m wide and 0.17m deep. It faces E towards Llyn Morwynion, the front bearing an inscription, 'TMC / 1864'.
Recorded as part of RCAHMW Uplands Initiative Project, W B Horton, H & H, 16/12/2013.