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.