But the scarp that defines three of its sides rises to around two and a half metres, the interior is crowded with growth that discourages casual inspection, and what the site actually contains is more layered than its pastoral setting suggests. At its centre sits a cross-inscribed slab; at its eastern edge, a bullaun stone, a boulder bearing one or more deliberately cut cup-shaped hollows that are commonly associated with early Christian and pre-Christian ritual use in Ireland. In the south-east quadrant, the remains of a church survive. The 1902 Ordnance Survey map labels the whole enclosure as a children's burial ground, a designation that would point to its use as a cillín, the informal and often unrecorded burial places used in Ireland for unbaptised infants. Yet no notable concentration of grave markers has been found to confirm this.

The site sits at the northern foot of a bluff, facing north-north-east, with an open aspect towards the north-west. Its history may reach back to at least the late twelfth century. A decretal letter from 1199, cited by the ecclesiastical historian Bolster in a 1972 study, names a place called Cellronan, and Kilbronoge may well be that site. A decretal letter was a formal papal ruling, often issued to settle disputes over church property or jurisdiction, and its mention of what could be this obscure West Cork enclosure places the site within the broader machinery of the medieval church at a moment when ecclesiastical organisation across Ireland was being reshaped under Rome's influence. Whether the church remains visible today date from that period or earlier is not certain, but the combination of a defined enclosure, a cross-inscribed slab, and a bullaun stone is characteristic of early medieval ecclesiastical settlements throughout the country.