The children's burial ground at Cargin in County Galway is one such site: officially named, locally known, and yet absent from both the 1838 and 1922 editions of the Ordnance Survey six-inch maps. That omission is telling. These informal burial grounds, sometimes called cillíní, were used across Ireland for unbaptised infants and others considered ineligible for consecrated ground. They occupy an uncertain space in the landscape, deliberately or incidentally unrecorded, their locations passed on by word of mouth rather than cartography.

The site is believed to lie within the overgrown interior of an associated church ruin at Cargin. At what appears to be its centre, three or four small stones were noted, ivy-covered and low to the ground, each less than twenty centimetres in height and roughly sixteen centimetres wide. They are aligned north to south, and their modest scale and placement suggest they may mark individual children's graves. The church structure they sit within is itself heavily overgrown, which makes precise location difficult and the stones easy to miss entirely.