It was initially recorded in 1996 as a possible wedge tomb, a type of megalithic burial monument built in Ireland during the late Neolithic and early Bronze Age, typically consisting of a roofed gallery that narrows toward one end. The classification seemed plausible enough to local knowledge, but when the Megalithic Survey inspected the site that same year, the investigators declined to confirm it. The structure is now recorded simply as megalithic, of unknown date and uncertain function.

What survives is a roughly rectangular arrangement of drystone walling, running approximately three to three and a half metres north to south, with two roughly parallel side walls set about 1.3 metres apart. Each wall is built from a single course of large, irregular boulders reaching up to 0.7 metres in height. The southern end narrows considerably, the gap closing to around 0.6 metres, and it is here that the construction becomes most deliberate: smaller stones are laid in rough horizontal courses on top of the boulder foundations on either side of the gap, raising the walls just enough to support a large slab or lintel that sits 1.1 metres above the ground. That southern entrance, or what functions as one, is the most legible part of the whole thing. The northern end and much of the interior are buried under a disordered heap of stones, which may represent collapsed upper walling, accumulated field clearance, or some mixture of the two. A hazel tree has taken root inside the structure, its roots threading through whatever lies beneath the rubble. The surrounding land is rough and rock-strewn, edged by bog, with much of the wider landscape now planted over with conifers.