On the Cassini edition of the Ordnance Survey six-inch map, the place is marked as Lios na Leanbh, meaning fort of the children or enclosure of the infants. That phrase points not just to an ancient enclosure, but to the likelihood that the site was repurposed, at some point after its original use, as a burial ground for unbaptised children. These informal cillíní, as they are sometimes called, were a common if quietly kept feature of the Irish countryside for centuries, occupying marginal or already-sacred ground where children who died without baptism could be interred outside consecrated churchyards.

The earthwork itself is a ringfort, a roughly circular enclosure of the kind built across Ireland from the early medieval period onwards, typically as a defended farmstead or homestead for a family of some local standing. This particular example sits in the south of County Limerick, about 165 metres east of the townland boundary with Derrylahan and the county boundary with Cork. The 1897 edition of the Ordnance Survey twenty-five-inch map records the name as Lisnalanniv and depicts the enclosure as approximately circular, around 26 metres in diameter. A bank survives along the eastern to south-western arc, while to the north-west the monument has been reduced to a scarp, a low sloping edge where the original earthwork has worn down. That scarp has been absorbed into an existing field boundary along part of its south-western to western side, which is how many such sites quietly disappear into the farmed landscape around them.

From satellite imagery taken between 2011 and 2013, the site is visible as an overgrown area defined by a cluster of trees, standing out against the surrounding managed pasture. That tree cover is often the most reliable indicator when approaching on the ground; ringforts in agricultural land frequently survive as scrubby, ungrazed patches that farmers have worked around for generations, sometimes out of practicality, sometimes out of older habit or unease. The site sits in working farmland, so access would require permission from the landowner. There is no formal visitor infrastructure, and the monument itself is unremarkable to the untrained eye, but the convergence of a prehistoric or early medieval enclosure, a troubling place-name, and a quietly absorbed field boundary makes it the kind of site that rewards attention.