A cairn, in the broadest sense, is simply a mound of stones raised by human hands, and this one is modest by any measure, standing about one and a half metres high and less than two metres across. What makes it quietly interesting is not its scale but its behaviour: stones are regularly removed by people who climb the hill, and then, just as regularly, replaced. The cairn persists in a state of constant, informal renegotiation between whatever it once was and whatever people still feel it to be.

The monument is recorded as occupying a commanding position at the summit of the hill, which suggests it was placed there deliberately to be seen, or to see from, or both. Locally, it is known simply to be "ancient", a word that carries a certain weight in rural Ireland, where the precise vocabulary of archaeology matters less than the understood sense that something has been there longer than living memory can account for. Beyond that, the record is spare. No excavation has apparently pinned down a date or a culture. It sits in the landscape as an open question, which may be part of what keeps drawing people up the hill to handle its stones.