Spread across gently sloping pasture in County Kildare, a vast oval enclosure nearly 350 metres from north to south and 250 metres east to west sits quietly in the landscape, its boundaries still legible to anyone who knows what they are looking at. The outer edge is marked partly by a hedged field bank and partly by a dry, shallow fosse, the kind of flat-bottomed ditch once dug to demarcate sacred or significant ground. A second, curving fosse runs inside the first, roughly 30 metres inward, adding a concentric layer that gives the whole arrangement a deliberate, purposeful quality quite unlike an ordinary field boundary.

Within the enclosure, a later earthen bank cuts east to west across the interior, and just south of it sits a small, slightly raised oval platform, around 40 metres across at its widest, defined by a low scarp no more than 40 centimetres high at its tallest point. What makes this inner feature particularly telling is its name on the Ordnance Survey six-inch map: Killeen Moat. A killeen, in Irish usage, typically refers to a small church or a burial ground associated with one, often a place set apart for the unbaptised or otherwise excluded from consecrated ground. The name strongly points to an ecclesiastical origin for at least part of this complex, suggesting that what looks today like an unremarkable arrangement of field boundaries was once organised around religious activity of some kind. Aerial photography from 1968 helped confirm the layout of the enclosure, and the site is discussed in local historical work by Cullen from 1999.

The enclosure is largely absorbed into working farmland now, and the fosses are shallow enough, between 15 and 30 centimetres deep, that they read more as faint wrinkles in the ground than as dramatic earthworks. The modern road that skirts part of the southern and north-western boundary gives some sense of the outer circuit's scale, though the full extent of the site becomes clearer from above than from ground level.