Boundary stone shown on OS 1st edition map. OA North Site Visit 2011. A carved boundary stone with flat faces and a rounded top. It measures approximately 0.8m high by 0.4m wide and is 0.2m thick. It is marked with the parish names of 'Llanderfel' and 'Llangwm' on opposing sides. The stone is more eroded than the other surviving examples on the county boundary. The site is shown on both the current and 1st Edition OS mapping. P.J. Schofield, OA North, 12th May 2011.