Bullaun stones are among the more enigmatic survivals of early Irish Christianity, their basins long associated with cursing, healing, and ritual use, though their precise origins remain debated. This one is modest in size, measuring roughly 65 centimetres by 74 centimetres and standing only 28 centimetres high, with a single basin about 38 centimetres across and 20 centimetres deep. It greets visitors before they even reach the ruined church beyond it, which is perhaps fitting for an object whose purpose was never entirely straightforward.

The church itself appears in the ecclesiastical taxation of the diocese of Elphin in 1306, recorded there under the name Kilnardan, which suggests a functioning parish community at that point, though the building may have served a more dependent role. It is thought to have been a Chapel-of-Ease to the parish church of Tibohine, roughly 8.5 kilometres to the east-northeast, meaning it would have provided local access to services for parishioners who could not easily reach the main church. What survives today is fragmentary: interrupted sections of the north wall, at least 10.8 metres in total length, with one section at the east end retaining a height of 2.7 metres and a thickness of 0.8 metres. That section also has an external base batter, a deliberate outward splaying at the foot of the wall designed to add structural stability. The church occupies the northern part of a rectangular graveyard whose masonry boundary walls enclose a space roughly 40 metres long and up to 35 metres wide, trapezoidal in plan rather than perfectly regular.

The graveyard is described as overgrown, and the headstones it contains date from the late eighteenth century onward. The site sits on the northeast-facing slope of a drumlin ridge, with the River Lung running roughly 220 metres to the northeast. Access is through a gate and stile on the western side of the enclosing wall.