No grave markers break the surface. No boundary wall or kerbing survives to frame what was once recorded as consecrated ground. The ground to the south of the ruined church of Killeen simply looks like ground, and yet it was here that unbaptised children, most of them stillborn, were laid to rest.

This type of site is known in Ireland as a killeen, a word derived from the Irish "cillín," referring to unconsecrated or marginal burial places used for those who were excluded from formal Church graveyards, primarily unbaptised infants. The practice was widespread across the country from the medieval period well into the twentieth century. At this particular site in Cowpark, the pattern appears to follow a familiar sequence: a possible medieval graveyard attached to Killeen Church was later reused, in the post-medieval period, as a children's burial ground adjoining the southern side of the ruins. The Ordnance Survey Field Name Books noted in the early nineteenth century that "the ruins of Killeen Church and burial ground for still born children is situated here," which suggests the site was still recognised and in use, or at least within living memory, at that time. Intriguingly, while the first edition six-inch Ordnance Survey map depicts the square-shaped graveyard with a dotted outline, indicating its uncertain or informal status even then, revised editions of the maps drop it entirely, as though the compilers decided it no longer warranted inclusion.

The site is a national monument in state guardianship, recorded under number 345, though the absence of any visible surface remains makes it a quiet and unremarkable-looking place without prior knowledge of what it holds. Visitors approaching along the ridge will find the church ruin, designated LI011-065001, the more immediately legible feature. The children's burial ground to its south offers nothing obvious to the eye, no stones, no markers, no enclosure. That invisibility is itself part of what the site communicates: a landscape layer that was documented, then quietly omitted from later maps, and is now recoverable only through archival records and the monument register.