If your in the area remember it’s locally called ‘smaelog’ (smile-og), might help to find the picnic area!
Very substantial and well preserved example of an earth banked Henge with ditches over a metre deep. Access is easy, just park near the cattle grid and head up the field. It is fenced but just walking around it is enough to get the feel of this site.

Graig-las henge


This carving is on the upper left, slightly to the rear
I visited this site and met the landownerand he told me that it was his grandfather who had collapsed it as it was “very dangerous”. He also told me that a ground radar survey had been done in the field adjacent to the tomb and a semi-circular or crescent shape had been recorded for “Future investigation”
One of the carvings on the left hand side of the stone is a sort of half man half fish that has a faint ‘familiar’ look to it. (see photo)
The name of this, as I always understood it, was Darren Dusant meaning Black Saint (cliff or rock of), it’s not the spelling on the map but three saint would be tri-sant as in Llantrisant which is very near by.
On OS maps there is also “Well” on the left(West) side of the lane directly above it and Lle’r Gaer is next to them both