Roughly subcircular in shape and measuring approximately 14.5 metres on its north-northeast to south-southwest axis and 11.5 metres across the other way, it is defined by a scarp, a slope or edge where the ground has been cut or shaped to mark a boundary, and its interior is slightly dished, as though the earth within has settled or was deliberately hollowed. A gap on the eastern side may well be an original feature rather than later damage. It is tentatively identified as a barrow, which is a burial mound of prehistoric origin, though the uncertainty in that word "possibly" is itself telling.

Barrows of various forms are scattered across the Irish landscape, most dating from the Neolithic through to the Bronze Age, and they tend to occupy elevated or prominent positions, placed where they would be visible, or where the dead might be closer to something the living considered significant. This one sits on a ridge, surrounded by bogland that would have looked quite different thousands of years ago, before the peat accumulated to its current depth. Whether it was always as modest in scale as it appears today, or whether centuries of exposure and the slow encroachment of bog vegetation have reduced it, is impossible to say without excavation. Its fair condition suggests it has not been heavily disturbed, which in itself makes it quietly unusual in a county where many earthworks have been ploughed, quarried, or built over.