Wedge tombs are the most numerous megalithic tomb type in Ireland, built during the late Neolithic and early Bronze Age, and they take their name from the characteristic narrowing of the chamber from one end to the other. This one follows the form faithfully: the chamber runs east to west, measuring 3.7 metres in length, and tapers from a width of 1.35 metres at the western entrance end down to 1.1 metres at the closed eastern end.

The structure is straightforward but precise. Three sidestones form each of the north and south walls, and a single backstone seals the eastern end of the chamber entirely. Over all of this rests one large roofstone, measuring 2.75 metres by 1.87 metres and 0.3 metres thick, a considerable slab to have been placed with such care. A further stone lies prostrate immediately to the south-west of the tomb. Whether it was originally part of the structure, perhaps a facade stone or an outlier, is not recorded, but its proximity is unlikely to be coincidental. Such fallen or displaced stones are common features around megalithic monuments, their original function often impossible to recover without excavation.