It is a ring-cairn, a prehistoric monument type in which a roughly circular bank of rubble encloses a central space, and this one is unusually well preserved. The bank, flat-topped and still standing between 0.3 and 0.5 metres high, is lined on both its inner and outer faces with kerbstones, the larger of which, on the southern and western exterior, run to between 1.5 and 1.7 metres in length. The overall interior measures roughly 7.55 metres north to south and 7.1 metres east to west, giving the whole structure a compact but deliberate geometry.

Within the enclosed space, a smaller cairn, a mound of stones, sits slightly off-centre towards the north. Its surface dips gently at the centre, a shallow depression about 1.5 metres across and 0.2 to 0.3 metres deep, which may indicate disturbance or simply the natural settling of material over a very long period. A gap of around 2 metres on the south-east side of the outer bank has been partly filled with field-clearance stones, the accumulated debris of generations of farmers working the surrounding land, which complicates reading the original entrance or opening. The monument sits within what has been identified as a multiperiod field system, meaning the landscape around it carries traces of human activity from several different eras layered on top of one another. A natural drain or gryke, the latter being a fissure in limestone bedrock characteristic of the Burren region, is visible just outside the bank to the north. A second, as yet unclassified cairn lies approximately 55 metres to the north-east, suggesting this part of the plateau held some broader significance in prehistory, though the relationship between the two monuments remains unclear.