What remains of the old church at Carragh is easy to miss precisely because it no longer looks like a church at all. Set within the southern sector of a graveyard that is still actively used, the structure has been reduced to a low, grass-covered rectangular mound, measuring roughly 15.5 metres east to west and 10.7 metres across, rising to no more than 0.7 metres above the surrounding ground. Along its northern edge, a facing of randomly coursed limestone blocks and spall-stones, the small irregular fragments packed between larger stones to stabilise the coursing, preserves just enough of the original fabric to confirm that something deliberate once stood here.

The site has a documented history that stretches back at least to the early eighteenth century. A researcher named Tickell, writing in 1960, noted that a small friary was recorded in this area as early as 1731, and the building is marked on Taylor's 1783 Map of County Kildare, suggesting it was still recognisable as a distinct structure at that point. By the time later observers examined the site, only the ruined shell remained, its burial ground continuing in use long after the building itself had levelled down into the earth. Adding further texture to the immediate landscape, two roadside crosses were once associated with this location: one stood approximately 200 metres to the north-west, another existed somewhere in the general vicinity. Roadside crosses of this kind were commonly erected at boundaries, at points along pilgrimage routes, or near places of religious significance, and their clustering around this site hints at a broader devotional geography that has since largely disappeared.