As we were passing this site on our way to Mynydd Brith Standing Stone I thought I may as well have a look to see if I could see any of the stones mentioned as being embedded in the roadside verge. I couldn’t.
The verges are very high near Archenfield Farm – well over head height in places.
It wouldn’t take much for any remaining stones to be hidden away forever.
Good luck if you intend looking for the stones. Perhaps asking at the Farm may be an option?
Possible site of destroyed chambered tomb (long barrow?) in an area rich with Neolithic tombs and barrows. Info from Pastscape:
A number of stones on the south side of the road at the top of the hill above Archenfield (SO 262423) may be the remains of a chamber tomb.
At least three large stones lie embedded in turf on the roadside verge. They do not have the appearance of natural disposition. The situation is suitable for a cairn but whether they represent a burial chamber or not is open to question.