The place is known locally as a cillín, the Irish term for an informal burial ground used historically for unbaptised infants and others who, under Catholic tradition, could not be interred in consecrated ground. These children were buried quietly, often at the margins of parishes, on hillsides, beside rivers, or near ancient earthworks, in places that occupied a kind of liminal status between the sacred and the everyday. This particular one measures roughly nine metres by six, a modest plot bounded on its southern edge only by the road below it.

The site at Letter More has long been disused, according to local people familiar with it. The small set stones in the interior are the only markers, offering no names, no dates, and no formal inscription of any kind. This is typical of cilliní across Ireland, where the absence of conventional memorialisation reflects both the social circumstances of the burials and the quiet, private grief that accompanied them. The practice of burying unbaptised children in unconsecrated ground persisted in rural Ireland well into the twentieth century, shaped by theological doctrine and community convention in roughly equal measure.

The site overlooks Ballynakill Harbour to the south, which gives some sense of its orientation on the slope, though the ground is steep and the stones low to the surface. Visitors passing along the road on the northern side of the harbour may not notice anything unusual without knowing to look.