The local name, Leaba Dhiarmada 'is Gráinne, meaning the Bed of Diarmuid and Gráinne, places it within one of the most widely distributed folktales attached to megalithic monuments across Ireland. In that legend, the lovers Diarmuid and Gráinne, fleeing the pursuit of Fionn Mac Cumhaill, sheltered each night in a different ancient tomb, and communities across the country claimed their local monument as one of those resting places. It is a name that tells you a great deal about how ordinary people made sense of structures they knew were very old but whose original purpose had long dissolved from memory.

Wedge tombs are the most numerous megalithic tomb type in Ireland, built roughly between 2500 and 2000 BC, and typically characterised by a roofed gallery that is wider and higher at one end, tapering toward the other. This example is in poor condition. The gallery, approximately 3.5 metres in length and oriented east to west, survives as two large sidestones now pitched markedly to the south beneath a single large roofstone. Some outer walling remains visible to the north and south of the gallery, and a displaced upright at the western end may once have formed part of an entrance feature. A few slight traces of the original cairn, the mound of stones that would have covered and defined the tomb, survive around the structure. Unusually, the tomb appears to have been built directly on the exposed rock surface rather than on any prepared or accumulated ground. Ruaidhrí de Valera and Seán Ó Nualláin documented it in their 1972 survey of megalithic tombs, and Tim Robinson, whose meticulous mapping of the Aran Islands remains a reference point for the archaeology and topography of the archipelago, noted it in his 1980 work on the islands.