Only the edges of two roofstones break the surface of the peat, along with a handful of orthostats, the large upright slabs that form the walls of such structures, and two further stones poking from the bog beyond the tomb's western end. Beneath the roofstones, waterlogged and largely inaccessible, lies a sharply wedge-shaped chamber. Wedge tombs are the most numerous class of megalithic monument in Ireland, built during the late Neolithic and into the Bronze Age, and they take their name from the way the chamber tapers in both height and width from one end to the other. This one at Maumnahaltora is almost entirely hidden, yet just enough stone is visible to identify the type with confidence.

The monument sits about 45 metres east of a companion tomb at the same site, suggesting this corner of Kerry once held genuine ritual significance. Recorded in J. Cuppage's 1986 archaeological survey of the Corca Dhuibhne region, the Dingle Peninsula, the tomb was found to be filled with water, which made close examination difficult and left the function of several partly exposed stones in the gallery area uncertain. A sidestone on the northern side measures at least 2.2 metres in length, with a second, smaller stone set inside the eastern end, and the top of an orthostat on the opposite side of the gallery is just visible at 1.5 metres long. The monument had been placed under a preservation order, but that order was removed in 1981, a detail which sits quietly at the edge of its recorded history without further explanation in what survives of the documentation.