Gwempa

Visited 2.7.11
Easy enough to access once you know which field gate to go through!
The one you need is at the junction on the minor road immediately to the south of the stone – under the electricity pylon cables. There is room to squeeze a car in at the gate opposite.
The stone itself is quite large; approx 6ft high x 2.5ft wide x 1.5 ft thick.
The stone is dark in colour and square(ish) in shape
Well worth a visit when in the area.