The larger of the pair, in the townland of Clahane, is an imposing structure: 26 metres east to west, 21 metres north to south, and rising to a maximum height of just over three metres. Its profile is markedly domed, and almost its entire surface has been consumed by peat over the centuries, giving it the appearance of a particularly emphatic hill rather than a human construction. A cairn, in this context, is a mound of heaped stone, typically Bronze Age in origin, raised over a burial or to mark a significant place in the landscape. What makes this one quietly arresting is the combination of scale, concealment, and setting: a massive thing, largely invisible for what it is, commanding panoramic views across the valleys on either side of the Slieve Mish mountains.

Where the peat has been disrupted, through partial collapse on the southern side, the underlying structure begins to show itself. The cairn is built from large red sandstone slabs and boulders, the same material used in its companion site roughly 300 metres to the west. That pairing is worth dwelling on: two substantial monuments placed in deliberate relation to one another across a mountain saddle, each within clear sightline of the other. Someone, at some point, chose this particular arrangement with some intention in mind, though what that intention was remains, as with so much prehistoric construction, a matter of inference rather than record. A small stone cairn, the kind used historically to mark townland boundaries, has since been added on top of the site, layering one era of territorial thinking onto another.