It was absent from Ordnance Survey maps of 1842 and 1905, then appeared on the 1937 edition labelled as a killeen, the Irish term for an unconsecrated burial ground typically used for unbaptised infants and others excluded from formal Christian interment. These sites occupy an uneasy place in the Irish landscape, caught between official religion and older, more local practices of mourning.

The enclosure is modest in every dimension. A roughly rectangular area measuring about 9.3 metres east-northeast to west-southwest and 4.2 metres north-northwest to south-southeast, it sits at the edge of a field of level tillage, where cultivated ground gives way to a rockier, overgrown margin. What remains of the boundary wall, surviving along the north-northwest and west-southwest sides, stands no higher than 0.3 metres and has largely collapsed into a rubble spread about 1.1 metres wide. On the other sides, the enclosure is marked only by a low rise in the ground rather than any standing structure. Inside, the surface is level, with numerous stones scattered across it, though whether any of these mark individual burials or are simply field clearance is not recorded.

The fact that this place was unrecorded on two successive nineteenth-century maps before reappearing in 1937 is itself quietly telling. Killeens were often known locally and avoided by outsiders, their locations passed by word of mouth rather than inscribed on any official document. That one was eventually mapped at Boherascrub suggests it had enough presence, or enough continued use, to be acknowledged, even if it had always been there, half-hidden at the field's edge.