The enclosure is circular, roughly 45 metres across, bounded by an earthen and stone bank that rises to nearly two metres in places. That form is a strong indicator of early Christian or even pre-Christian origins. Circular enclosures of this kind, known in Irish archaeology as cashels or ringforts depending on their construction, were frequently reused as burial grounds long after their original purpose had been forgotten. The entrance here is particularly fine: a stone-lined, partly cobbled passage that runs from the road at the north-east through the bank, giving the approach a deliberate, almost ceremonial quality.

The graveyard sits on a gentle south-east facing slope above the valley of a small stream, a positioning that recurs with quiet regularity at early ecclesiastical sites across Ireland, where sheltered, south-facing ground near water seems to have been consistently favoured. Among the later headstones, two small granite slabs stand apart. One is cut in the rough form of a cross; the other has a rounded protrusion on its upper surface. Neither carries the confident lettering of the post-medieval stones around them. Their crudeness and their granite suggest considerable age, possibly early medieval grave markers of the kind found at sites associated with early saints or local monastic communities, though no specific dedication or founding figure is recorded for Ballymaghroe. The presence of these two anomalous stones within a formally bounded, ancient enclosure gives the site a layered quality, centuries of burial practice compressed into a modest hillside field.