The cairn, a deliberate accumulation of stones that in Irish contexts typically marks a burial, a memorial, or a territorial boundary, measures roughly 9.5 metres east to west and 7.5 metres north to south, rising between 0.8 and 1.8 metres above the surrounding ground. The boulders themselves are substantial, each approximately a metre long and half a metre wide, the kind of material that required real effort to gather and arrange.

What makes this particular cairn quietly puzzling is its probable purpose. Rather than serving as a funerary monument, it may have been built simply to mark the boundary between townlands, those ancient divisions of land that structured rural Irish life long before modern administrative boundaries replaced them. If that interpretation is correct, someone once thought it worth hauling large granite stones to a mountaintop purely to say: here is where one community ends and another begins. A second cairn sits immediately to the north, which suggests this part of the ridge was considered significant enough to be marked more than once, whether as a boundary line, a waypoint, or something else entirely that the landscape no longer makes obvious.