The site at Kilrussane appears on the 1842 Ordnance Survey six-inch map as a large dotted circle roughly 110 metres in diameter, labelled simply "Grave Yd", with a rectangular outline in its south-eastern quadrant marking a "site of church". Today there is no visible surface trace. Livestock move across the east-facing slope with no apparent awareness that they are walking over what may once have been a significant religious enclosure.

The circular boundary is the most telling detail. In early Irish ecclesiastical landscapes, a large circular enclosing wall or bank, known as a cashel or monastery enclosure, typically defined the sacred precinct of a monastic settlement, separating the community's churches, workshops, and burial ground from the surrounding farmland. A diameter of around 110 metres places this firmly in the range associated with such foundations. The site is believed to represent Cill Rossaín, meaning Russan's Church, a dedication that points to an obscure local saint of the early medieval period. Writing in 1923, the historian Power noted that the large circular surrounding fence had been thrown down within the previous half century, meaning it was still partially standing within living memory when he was writing. A 1615 visitation record, cited by Brady, lists this as one of two churches in the parish of Killaspugmullane that were at that time in good repair, suggesting a functioning place of worship well into the post-Reformation period before its eventual disappearance from the landscape entirely.