Set stones of sandstone and shale mark the graves, arranged in the same east-west orientation as Christian burials, though these children were denied formal church rites and so denied consecrated ground. What makes this place quietly unusual, beyond its solemn purpose, is its shape: a long, thin corridor of burial, bordered to the south by a stream that also marks a townland boundary, and interrupted near its eastern end by a field wall that cuts straight through it.

Places like this are known in Irish as cillíní, informal burial grounds used from at least the medieval period through to the twentieth century for those who could not be interred in parish cemeteries. The unbaptised were the most common occupants, though suicides, strangers, and others excluded from church burial were sometimes laid here too. The Boleythomas example is notably elongated. Today the surviving ground measures roughly 40.5 metres east to west and only 3.2 metres north to south, but the Ordnance Survey six-inch map of 1931 recorded it at approximately 95 metres in length, suggesting that a substantial portion has since been lost to agricultural activity or boundary changes. That shrinkage over the course of a century is a reminder of how precarious such sites remain, occupying ground that was never formally protected and often barely acknowledged.