Known locally as the 'Lisheen', a diminutive of the Irish word for fort or fairy mound, the site was used as a burial ground for children, one of hundreds of such places scattered across Ireland that occupy a peculiar space in both religious and folk tradition. Low, uninscribed upright stones rise from a scatter of loose stone across the interior, with no names, no dates, nothing to identify who lies beneath.

Such sites, sometimes called cillíní or killeens, were used for the burial of unbaptised infants and others considered ineligible for consecrated ground under Catholic practice. The Church's position on limbo, the theological concept holding that unbaptised souls could not enter heaven, meant that for centuries families had to find other arrangements for children who died before or shortly after birth. Enclosures of pre-existing archaeological significance, the kind already set apart from ordinary farmland in the popular imagination, were frequently chosen for this purpose. The enclosure at Annagh More carries that dual character: an older, possibly prehistoric or early medieval structure repurposed over generations for a grief that had no official place to go. The stones left to mark individual burials were kept plain, either by custom or necessity, and no inscriptions survive.