The stone itself measures 2.2 metres by 2 metres, and at 0.25 metres thick it is a substantial slab, resting over what appear to be the collapsed remnants of a burial chamber. What makes this particular spot unusual is the honest uncertainty surrounding it: archaeologists can point to features consistent with a wedge tomb, including what look like single sidestones to the north and south and two possible outer-wall stones still visible at the southern edge, but no backstone survives, no mound is apparent, and the full picture remains genuinely unclear.

Wedge tombs are among the most common megalithic monument types in Ireland, generally dated to the later Neolithic and early Bronze Age, roughly four to five thousand years ago. They take their name from their characteristic shape, wider and taller at the entrance end and tapering toward the back, and they are typically orientated to face the setting sun in the west or south-west. This example, orientated north-east to south-west, sits in company that lends it some interpretive weight. A second wedge tomb, more confidently identified, lies just 55 metres to the south-west, sharing a similar orientation. A standing stone stands 180 metres to the north. Whether the collapsed remains represent an independent monument or something functionally related to its neighbours, this small hillside above the harbour was clearly a place that mattered to the people who shaped it.