This modest hummock, roughly sixteen metres across, is known locally as a children's burial ground, one of many such sites scattered across Ireland that speak to a long and painful tradition of burying unbaptised infants in unconsecrated ground.

These burial grounds, known in Irish as cillíní (the singular is cillín), existed outside the formal structures of the Church. Catholic doctrine held for centuries that children who died without baptism could not be buried in consecrated churchyards, and so communities found their own places, often at liminal or marginal spots in the landscape, natural rises, old earthworks, field boundaries, or shorelines. The site at Leitrim Beg fits this pattern: a natural feature, repurposed by necessity, and maintained in community memory rather than in any official record. A few boulders are visible at the surface, though they show no clear arrangement or alignment, and the ground is now heavily overgrown with thistles and grass. It was brought to wider attention by Dr C. Cunniffe, whose local knowledge preserved what the landscape itself gives away only reluctantly.