Image of Mynydd-y-Garth (Barrow / Cairn Cemetery) by thesweetcheat

What appeared to me to be a section of ring bank, in the middle of the cairnfield. Looking west towards Bryn Mawr across the Clydach valley. The Carn Llechart monuments are further right along the skyline ridge.

Image credit: A. Brookes (7.10.2023)