Locally known as Labbydermot, it is a wedge tomb, one of the most common megalithic tomb types in Ireland, built by farming communities during the late Neolithic and early Bronze Age. The name wedge refers to the characteristic shape of the burial gallery, which tapers in both width and height from west to east. This one is poorly preserved, but its setting is not: it commands a wide outlook to the east and north-east, a reminder that these structures were rarely placed without some consideration of the landscape around them.

What survives at Labbydermot is fragmentary but informative. A fine septal stone remains in place; a septal stone is an upright slab used to divide the interior of the gallery into separate chambers. At the western end, part of a portico, the entrance structure that would have framed the tomb's mouth, is still visible on its southern side, and a low stone nearby may have formed part of a facade. The gallery itself measures at least four metres in length, its southern side formed by a single substantial stone that decreases slightly in height as it runs eastward. Only one small orthostat, an upright structural stone, survives on the northern side. A displaced roof-stone partially covers the gallery, having shifted from its original position at some point in the intervening millennia. A modern field fence runs along the southern edge of the monument, marking the point where archaeology and everyday farming land meet.