The enclosure measures roughly 80 metres north to south and 67 metres east to west, and is defined by two earthen and stone banks with a fosse, a drainage or boundary ditch, running between them. It is not a dramatic ruin in any conventional sense; what you are reading is mostly in the ground itself, in the way the land rises slightly towards the centre and the way vegetation traces the line of the fosse where the earthworks have otherwise softened into the landscape.

The monument's possible ecclesiastical identity comes from two converging pieces of circumstantial evidence. The name Killescragh almost certainly contains the Irish element "cill", meaning a church or monastic cell, a prefix that appears widely across Irish townland names wherever early ecclesiastical sites once existed. More concretely, a children's burial ground is associated with the enclosure. Known in Irish tradition as a cillín, such burial grounds were typically used for unbaptised infants and others excluded from consecrated ground, and they cluster with notable frequency around early ecclesiastical sites. Neither piece of evidence is conclusive on its own, but together they tip the interpretation firmly towards a religious foundation of some kind. A later field wall, running north to south, cuts through the fosse and the outer bank on the eastern side, a reminder that the landscape was reorganised in agricultural periods long after whatever community first shaped this hillock had gone.

The inner bank remains visible all the way around the enclosure, and the fosse is best preserved at the north-east. Towards the western side the outer bank fades to little more than a suggestion in the ground, and a large granite boulder sits at the centre of the interior. Faint cultivation ridges are also traceable within, hinting at a period when the enclosed ground was worked rather than left to memory.