Ring cairns may have had a function that lay somewhere between that of the much older
henges and the contemporary
stone circles. In northeast Scotland the
recumbent stone circles seem to have encircled a cairn and typically it was a ring cairn, as distinct from a Clava cairn. In some instances, in particular at
Tomnaverie stone circle, the cairn was built before the circle according to an overall design. Usually all superficial trace of the cairns has disappeared over the millennia. The fact that in southeast Wales there are so few stone circles could be related to the fact that ring cairns were built there instead. Although graves have been found in some ring cairns, this does not appear to be their original purpose. In the central area, graves and pits with cremation ashes, fireplaces and sometimes, small, low cairns are found. The slightly oval ring cairns near
Arthur's Stone on the
Gower Peninsula show that the inner edges of ring cairns were especially carefully constructed and were set in front of a small grave. Originally there was a passage through the ring here, about ten metres across, that was blocked when the cairn ceased to be used. == See also ==