What makes this wedge tomb quietly arresting is the precision of its geometry, even in partial ruin. A wedge tomb is a type of megalithic monument characteristic of later Neolithic and Early Bronze Age Ireland, so named for the way the burial gallery narrows from a wide western entrance towards a closed eastern end. Here, that tapering is emphatic: the main chamber contracts from 1.45 metres wide at the west to just 0.4 metres at the east, over a length of less than three metres, before being sealed by a single closing slab.

Excavation revealed that the tomb was once enclosed within a trapezoidal cairn, roughly 12 metres long and narrowing from 10 metres wide at the west to around 2 metres at the east, its edges reinforced by small upright stones. That cairn, however, had been largely dismantled before peat began to grow across the site, which places its removal in a period prior to the formation of the surrounding bog. The peat, ironically, may have preserved what little remained. Beneath the cairn, excavators found a flint flake with secondary working along one edge, suggesting deliberate human activity, but no definite evidence of burial was recovered from within the chamber itself. The single roof-stone, 3.2 metres long, still rests at an incline across the side-walls, and a blocking stone separates the chamber from a western portico that measures 2.3 metres long. That portico, flanked by three stones on each side, may originally have carried its own roofing slab, angled downward to meet the chamber roof-stone. The overall internal length of the gallery runs to 5.45 metres, as recorded by Ruaidhrí de Valera and Seán Ó Nualláin in their 1982 survey of megalithic tombs across Munster.