The local name, Giant's Grave, belongs to a tradition found across Ireland and Britain, where unusually large or mysterious old structures were attributed to giants rather than to any human hand. What survives here is far more modest than the name implies, yet the fragments that remain point to something once significant: the last vestiges of a megalithic tomb, the kind of monument built in the Neolithic period, roughly five to four thousand years before the common era, as a communal place of burial.

Several orthostats, meaning the large upright stones that would have formed the walls of the burial chamber, are still standing, along with a number of displaced stones scattered around them. Together these appear to be the remains of a gallery, the long stone-lined passage characteristic of a particular class of megalithic tomb. The alignment runs roughly north to south. Most notable among the surviving uprights is a gable-shaped stone at the more southerly end, which may originally have served as a backstone, closing off one end of the gallery. This reading of the site was set out by Ruaidhrí de Valera and Seán Ó Nualláin in their 1972 survey of megalithic tombs across Ireland, a landmark work that catalogued and classified hundreds of such monuments across the country.