Walk into the cereal field on the gentle south-facing slope where it lies, and the ground gives nothing away. No raised bank, no obvious hollow, no shadow in the grass. The site exists, as far as any ground-level visitor is concerned, only as an absence of evidence, and yet from the air it becomes perfectly legible: a D-shaped enclosure roughly thirty metres across, its straight edge running along the north side, the curve of a single fosse, or ditch, tracing the rest of its outline through the soil below the crop.

Ringforts, known in Irish as raths, were the most common form of rural settlement in early medieval Ireland, typically consisting of a circular or near-circular area enclosed by one or more earthen banks and ditches. Thousands survive across the country in various states of preservation, but many more exist only as cropmarks, the buried ditches and banks influencing how moisture moves through the soil and, by extension, how the crops above them grow. In a dry summer, those differences in moisture become visible from the air as variations in colour and height across a field. This site in Ballytory was photographed in July 1996, when the cropmark was clear enough to reveal not only the general shape of the enclosure but the D-plan, an unusual variant with one flattened side, which sets it apart from the more typical circular rath. The dimensions suggest a modest enclosure, consistent with a single farmstead rather than a high-status site with multiple concentric ditches.