Its drystone walls, no more than eighty centimetres high, enclose the ruins of a tiny oratory and two rectangular buildings. Two low upright stones in the north-west corner of the interior may mark graves. The site is known as Cill Eilthín, and it functioned, into the nineteenth century at least, as a burial ground for children.

Places like this one belong to a broader Irish tradition of cillíní, informal burial grounds, often associated with early ecclesiastical sites, where unbaptised infants and children were interred outside the boundaries of consecrated parish graveyards. The Church's long-standing refusal to permit the burial of unbaptised children in consecrated ground meant that families turned instead to older, liminal sites, frequently those already carrying some trace of sanctity from an earlier Christian or pre-Christian past. At Killelton, that earlier layer is visible in the oratory remains within the enclosure, suggesting a foundation rooted in the early medieval period of Irish Christianity. Ordnance Survey Name Books for the Kilgobban area recorded children still being brought here for burial in the nineteenth century, long after the surrounding ecclesiastical life of the site had otherwise faded. The enclosure itself is modest in scale, roughly twenty-five metres east to west and twenty-four metres north to south, its low walls more suggestive of a boundary marked than a structure built for defence or grandeur.

The site sits on the Dingle Peninsula, a landscape already dense with early Christian and prehistoric remains, and was documented as part of the Corca Dhuibhne archaeological survey published in 1986. It carries a preservation order under the National Monuments Acts, which reflects both its fragility and its significance as a place where the grief of ordinary families left a quiet, lasting mark on the hillside.