It is a cillín, the Irish term for an unconsecrated burial ground used historically for unbaptised infants, and for others considered ineligible for burial in sanctified churchyards. These sites were a quiet, sorrowful feature of the Irish rural landscape for centuries, their locations often known locally but rarely marked on maps or acknowledged in official records.

The enclosure at Cahermore is subrectangular in plan, measuring roughly 17 metres north to south and 13.5 metres east to west. A low earthen bank defines its boundary, though this is now largely obscured by undergrowth and accumulated rubble. A modern field wall has been built around the outside of the bank, folding the older structure into the contemporary agricultural landscape in a way that makes the enclosure easy to overlook entirely. Inside, the ground is heavily overgrown, but several lines of set stones remain visible, marking the positions of graves in the ordered, if informal, way that characterises these sites. The stones are not inscribed headstones in any conventional sense; they are simple markers, placed to record a presence that official burial registers never would.

Cilliní are found across Ireland in their hundreds, often sited at boundaries, on marginal ground, or near older prehistoric enclosures, and Cahermore fits this pattern of quiet liminality. The site sits within ordinary farmland, enclosed now by the kind of drystone wall that defines field boundaries throughout Connacht, but the low bank beneath the undergrowth is considerably older, and the lines of stones inside speak to a community practice that persisted well into the twentieth century.