A wedge tomb is a Neolithic or early Bronze Age burial monument, typically a roofed gallery of upright slabs that narrows and lowers toward one end, usually orientated west to east. This particular example was never marked on Ordnance Survey mapping and only appeared on Tim Robinson's map of the Burren in 1977, which says something about how thoroughly it had retreated from official notice.

When Ruaidhrí de Valera and Seán Ó Nualláin examined the site for their 1961 Survey of the Megalithic Tombs of Ireland, they found a very poorly preserved structure almost entirely swallowed by an irregular mound roughly 7.5 metres by 5 metres, with the whole enclosed within traces of a low bank that may once have been a wall. Only one element was still standing: the large south sidestone, three metres long and one metre high, orientated southwest to northeast. Part of its upper edge was broken, but the eastern portion appeared to have been dressed and sloped gently from west to east. Unusually, the stone has a natural hole through its upper centre, a feature also remarked upon by the antiquarian T. J. Westropp when he visited in 1905. A large flat slab lying to the north of the sidestone prompted disagreement between the two investigators: de Valera and Ó Nualláin believed it to be a displaced roofstone that had fallen from above; Westropp had taken it to be the tomb's north sidestone. Beneath it, the edge of yet another slab was just visible. A smaller upright set close to the south sidestone's southwestern end may belong to the tomb's outer-walling. The site was inspected again in 1999 and found to be unaltered since the earlier survey.