No walls, no foundation stones, no graveyard kerbing, nothing at ground level to suggest that anything was ever here. What remains is a subtly dished, D-shaped area of grass, roughly thirty metres across, the kind of hollow that catches the eye only if you know to look for it.

The site had already vanished by the time the Ordnance Survey mapped it in 1839, though the cartographers still marked it as a ruined building, noting dimensions of approximately twelve metres northwest to southeast and seven metres northeast to southwest. A year or so later, around 1840, the scholar John O'Donovan came through the area as part of his extraordinary project to document the placenames and antiquities of Ireland townland by townland. Local people pointed out the spot to him as the location of a church, but O'Donovan could see nothing himself, and recorded the absence accordingly. That account was later published by Michael O'Flanagan in 1933 as part of a collection of O'Donovan's field correspondence. The site sits just east of a northwest-to-southeast stream and mill race, a landscape that suggests long agricultural use, which may partly explain why so little survives above ground.

The D-shaped enclosure, if that is what the grassy depression represents, is a form sometimes associated with early ecclesiastical sites in Ireland, where a curved boundary, often defined by an earthen bank or fosse, would have enclosed a church and its attendant burials. Here, even that boundary has dissolved into the slope. What Aclamon preserves, in the end, is less a place than a question: a hollow in the ground that local memory kept alive long after the building itself had gone.