A single cairn lies to the southwest of the rest, separated from them by both a stream and a trackway running east-west between two tumbled stone walls. Tracing the field shapes on the OS map tells us where this cairn should be, but we can’t see it (or at least we can’t recognise it). There is no defined path down from the ridge, so we head straight down through the scrubby vegetation to where the cairn should be, next to a small triangular field.
And so it proves to be. The cairn is actually very large, at least its footprint is. But it is covered in grass and heather, seemingly set on blending into the landscape. It could be a ring cairn, as little remains beyond the circular bank of rubble that defines its outer edges. Perched on a little knoll, next to a clear-running stream, it positioning reminds me of the cairn across the stream from Maen Llia in the Brecon Beacons, far, far away to the south.