Four separate structures are arranged across the site, each built from large upright slabs forming box-like enclosures. The westernmost is a three-sided rectangle, open to the east, with internal dimensions of 1.4 by 1.3 metres; a large flat slab lying to its west may once have served as a capstone. Eleven metres to the east, a second four-sided arrangement opens to the south, its open edge sitting directly on a natural scarp. A third feature is a low mound with two parallel slabs set into it, and the fourth, easternmost grave is marked by a large boulder covering a depression, with a line of small stones emerging from beneath it and running south-west.

What makes the site genuinely puzzling is that nobody has been able to agree on what it is. Two broad interpretations have been proposed. One is that the graves are megalithic cists, a prehistoric burial form in which a body is placed within a stone-lined pit or box, typically covered by a capstone; this reading was put forward by Henry in 1937. The other, advanced by Fanning in 1981, is that the site is a ceallúnach, sometimes anglicised as calluragh, a term for informal burial grounds used in early and medieval Ireland, often associated with unbaptised children or others excluded from consecrated ground. An Early Christian presence is indicated by a cross-slab found at the site, and a second possible grave-slab that has since gone missing. The difficulty is that the sheer scale of the stones used here is not typical of Christian burials, which tends to keep the prehistoric interpretation alive even though the site has been formally rejected as a megalithic tomb by the Megalithic Survey of Ireland. The graves may belong to a prehistoric phase, to an Early Christian one, or to a later community that returned to an already ancient place to bury their dead.