The mound measures roughly ten metres by seven, and within it sits a small stone chamber, just 1.75 metres long and 1.2 metres wide, roofed by a single large capstone. What makes it quietly unusual is the uncertainty surrounding it: archaeologists have stopped short of classifying it definitively, noting only that the evidence is consistent with it being a wedge tomb.

Wedge tombs are the most numerous type of megalithic monument in Ireland, built during the late Neolithic and into the Bronze Age, typically between around 2500 and 2000 BC. They take their name from their characteristic shape: a burial gallery that is wider and higher at one end and tapers towards the other, almost always oriented to the west or north-west. The chamber here follows exactly that pattern, open to the north-west and narrowing towards its rear. The site sits on a glacial ridge, a long landform deposited by retreating ice sheets at the end of the last glacial period, which would have made it a prominent and probably deliberate choice in the prehistoric landscape. Some digging has disturbed the chamber and the ground immediately to its north-west, so whatever material evidence once lay inside has been compromised, which is part of why a firm classification has proved elusive.