The enclosure measures roughly eight metres across in either direction, bounded on two sides by a low earth and stone bank and elsewhere by a natural scarp in the land. The upright stones within it carry no inscriptions, no names, no dates. They mark the graves of children.

This place is what is known in Irish as a cillíneach, a term for informal burial grounds used across Ireland for unbaptised infants and others who, under Catholic ecclesiastical practice, were denied burial in sanctified ground. The word shares a root with the early Christian cell or small church, and many such sites occupy ground with older sacred associations. The children buried here were laid to rest outside the formal church system, yet their families clearly chose and maintained a specific, bounded place for them, close to the shore, overlooking the bay. The bank and scarp that define the site, modest as they are, represent a deliberate act of enclosure, a decision that this ground was different from the surrounding pasture. A separate enclosure of unknown purpose lies approximately twenty metres to the south-east.

Cillíní are scattered across the Irish landscape in considerable numbers, and many remain easy to walk past without recognition. At Reentrusk the grave-markers are plain and upright, offering no biographical detail, only a physical insistence that someone was buried here and that it mattered. The site sits in working farmland, so any visit would require both awareness of that context and a careful eye for the low earthworks, which are subtle enough to read as nothing more than a slight irregularity in the field.