The site name, Caltraghgarraun Fort, carries within it the word "caltragh", an Irish term historically associated with children's burial grounds, those marginal, unconsecrated plots where unbaptised infants were interred outside the formal rites of the Church. The word alone is often the most durable evidence that such a place exists at all.

Children's burial grounds of this type, sometimes called cillíní, were used from the medieval period through to the twentieth century, their locations frequently chosen at the edges of the settled landscape: old ringforts, boundary ditches, shorelines, and ancient earthworks. A ringfort itself is a circular enclosure, typically of early medieval date, defined by one or more banks and ditches and once used as a farmstead. That a cillín should be placed within one is not unusual; both share a quality of apartness, of lying just outside the ordinary rhythms of parish life. At Barnpark, the physical remains are slight. Two low, grass-covered mounds of stone and a scatter of larger limestone boulders are all that can be seen, and even these are only tentatively identified as marking the burial ground's location.

The site is a quiet example of how much Irish historical and social geography is encoded in place names rather than in monuments. Without the "caltragh" element preserved in the fort's name, this particular corner of North Galway would likely pass unremarked.