It is a cillín, the Irish term for an informal burial place used for unbaptised infants and children, sites that existed quietly outside the boundaries of consecrated ground. This particular one was recorded in the Ordnance Survey Letters under the curious name "Billow trees", almost certainly a phonetic misrendering of an Irish place name, noted with the bracketed acknowledgement that something in the transcription had gone wrong.

The site sits on a wedge-shaped patch of ground roughly twelve metres long and eight metres wide, unenclosed and exposed on the hillside. Small set stones mark the graves, oriented east to west in the traditional Christian manner, and some head- and foot-stones are still visible above the grass. A row of hawthorn bushes runs along the northern edge, giving the only real definition to a space that has no wall or fence to announce itself. The hawthorn has long been considered a liminal tree in Irish folk tradition, associated with boundaries between worlds, and its presence here may not be entirely accidental. Approximately thirty metres to the north-west, a holy well shares the same quiet corner of the valley, suggesting that this small cluster of places once formed a meaningful local landscape, used for purposes that sat slightly apart from the official religious geography of the parish.