There is a trio of cairns located upon the summit plateau of 1,774ft Carn Gron, a shapely large hill / mini-mountain a little under 4 miles to the approx north-west of Tregaron. According to Coflein:-
Summit Cairn – SN73976106:
“A round cairn, 16.5m in diameter & 1.2m high, set upon the highest point of Garn Gron, having a shelter constructed on the E side, with the NE segment having been cleared to ground level; possible cist elements are exposed at the centre”
Cairn II – SN74006108:
“A modern cairn, 5.0m in diameter & 1.8m high, is set upon the turf-covered base of an apparent earlier cairn, 9.0m in diameter”
Western Cairn – SN73786114:
“A subcircular cairn, 15m N-S by 14m & 1.2m high, set on the W summit of Garn Gron, apparently touched on its NE side by Gwys-yr-Ychen-bannog linear boundary feature; a central disturbance displays possible cist elements”.
[J.Wiles 23.07.04]