It marks the meeting of Aghavoghil to the north, Cullionboy to the south-east, and Gubinea to the south-west, a kind of territorial full stop placed in open ground where no fence or ditch was ever built. The Ordnance Survey cartographers who mapped the area in 1910 noted it in their characteristic italic script as nothing more than a 'Pile of Stones', which is both accurate and quietly understating. Lough Aganny lies roughly two hundred metres to the west-north-west.

Boundary cairns of this kind served a straightforward but important purpose in the pre-enclosure and early modern Irish landscape. In the absence of walls or hedgerows, a carefully placed cairn, sometimes supplemented by a single large boulder marker, gave neighbouring communities and landowners a fixed, visible reference for where one holding ended and another began. Here, that boulder marker still stands approximately forty metres to the west of the cairn itself. The 1910 Ordnance Survey edition, which used the six-inch scale, is the only map known to record this particular structure, suggesting it had already faded from official attention by the time later surveys were produced, or perhaps that the cartographers of that edition were simply more thorough in noting features that later colleagues passed over. The cairn is described as having flush faces, meaning its outer stones are laid so that the surface sits relatively even and compact rather than loose and tumbled, a detail that implies some deliberate construction rather than casual accumulation.