I have referred to this ridge before as being located at "Pengegin" in the Gwaun Valley. It should more accurately be referred to as the Llanychlwydog rock ridge. It's a bit of a mouthful I know, but accuracy is always a good idea. Grid reference: SN032339
As we can see, the ridge is about 10-12 m high, and it runs along the south side of the road very close to the primary school shown on the map.
As at Rhosyfelin, it is a ridge separating a small meltwater "distributary" valley from the main meltwater conduit. I wouldn't mind betting that the sedimentary sequence here -- including accumulated rockfall debris or scree -- is just the same as it is at Rhosyfelin. If the archaeologists had had any sense, they would have conducted a "parallel" dig here, just to show that there really is something unique about Rhosyfelin, relating to the selection of bluestones........ That would have been the scientific thing to do.
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