The enclosure is modest in scale, roughly 25 metres east to west and just over 24 metres north to south, defined not by a wall or ditch but by a very low scarp, a subtle change in the ground level that only just announces itself to the eye. Dotted across the interior are low, uninscribed upright stones, uncarved and without names. It is the kind of place that registers as odd before it registers as significant.

The enclosure was used as a children's burial ground, a cillín in Irish tradition. These were informal burial sites, found across Ireland, where unbaptised infants and sometimes stillborn children were interred outside consecrated ground. Catholic doctrine, as it was observed for centuries, held that unbaptised souls could not enter heaven, and so the Church would not permit burial in a parish graveyard. Families instead turned to liminal places, old enclosures, ancient earthworks, the edges of bogs, cliff margins, anywhere that sat at the boundary between the settled world and something older. The enclosures they chose were often prehistoric in origin, their age lending a kind of sanctity that had nothing to do with formal religion. At Annagh More, the oval scarp that defines the site may predate its use as a burial ground by many centuries, though the notes give no date for when either the enclosure was first made or when burials began there. The absence of inscribed stones is typical. These were not commemorated in stone because they could not be, at least not openly.