This is a cillín, a type of unconsecrated burial ground used in Ireland for centuries to inter unbaptised infants, stillborn children, and others denied burial in consecrated ground. The custom arose from a theological position, long maintained in Catholic doctrine, that the unbaptised could not enter heaven and therefore could not lie in churchyard soil. Families, unwilling to leave their children without any kind of formal resting place, turned instead to liminal ground: old raths, field boundaries, cliff edges, and small plots like this one in Kellysgrove.

The site itself is poorly preserved. It covers a roughly oval area of about 22 metres east to west and 19 metres north to south, with no enclosing wall or ditch to mark its edges, only the placement of numerous stones set at irregular intervals across the grass. To the north, a small moss-covered mound of stones adds a further quiet accent to the landscape. The single named marker is a broken fragment of inscribed headstone to the west, dedicated to Cecilia Louisa Kelly. It is the only piece of carved stone on the site, and its survival, even in fragments, is something of an exception; most cillíní went entirely unmarked. A reference to the site appears in Egan's 1960 survey, placing its documentation well before the broader scholarly and public interest in such sites that developed in later decades.