The slight scarp, reaching perhaps a metre in height at its tallest, traces the northern arc of an oval or sub-circular boundary that would have measured more than 85 metres from north-north-east to south-south-west. This kind of enclosure, a defined precinct surrounding an early Irish church, was the standard form of monastic and ecclesiastical organisation in pre-Norman Ireland, with the earthen boundary serving both practical and symbolic functions, separating sacred ground from the surrounding landscape. Most of that boundary has long since disappeared into the pasture, but the northern sector holds its shape just well enough to suggest the scale of what once stood here.

The site has been identified as 'Tuaim Sruthra', a pre-Norman foundation associated with a saint recorded variously as Raoiriu or Raoilinn, figures who do not appear in the more widely circulated hagiographies but whose names surface in local scholarship. Connellan, writing in 1943, made this identification, and Egan noted traces of the early enclosure in 1960 in connection with Templereelane Church, the medieval structure that still occupies the site. Around the church itself, the grassed-over foundations of a near-square walled enclosure, roughly 26.5 metres by 27 metres, survive just below the surface; this inner boundary most likely delimited a graveyard. A gap on the western side probably marks where an entrance once stood. A small low mound is visible along the northern line of the outer enclosure, and a short linear bank survives in the north-western quadrant. Local tradition adds one further detail: a cross was reportedly uncovered at the site at some point in recent decades, though its current whereabouts are not recorded.