Its interior was used, at some point, as a children's burial ground, a practice that was once far more common across rural Ireland than official records tend to reflect.

Children who died unbaptised were historically excluded from consecrated ground under Catholic doctrine, and so communities found other places for them, often ancient, liminal sites that carried their own sense of sacred or boundary significance. Ringforts, cashels, old raths, and other pre-Christian enclosures were frequently chosen, perhaps because they already existed outside the ordinary rhythms of farmed or inhabited land, or perhaps because their age gave them a weight that felt appropriate. At Barroe, local knowledge passed on by Jimmy Tarpy in 2014 suggests that the burials were concentrated in the southern half of the cashel's interior. But the ground offers no clear confirmation. Loose stones and years of overgrowth have erased whatever surface markings may once have distinguished individual graves, and it is no longer possible to identify them with any certainty.

What remains is a place that reads as simply ruined, without any obvious outward sign of its secondary use. The graves, if they are still there beneath the vegetation and scattered stone, are effectively invisible. That invisibility is itself part of a broader pattern: these burial grounds, known in Irish as cillíní, were rarely marked in any formal way, and many have only survived in local memory rather than in maps or monuments.