What the photographs captured was a cropmark, the faint differential in how crops grow above buried features, outlining the fosse, or defensive ditch, of a circular enclosure roughly 35 metres in diameter. The enclosure itself has no visible presence on the ground today; it survives only as a trace read from the air, a ghost of a boundary that farming and time have otherwise erased.

The aerial survey that caught this impression was carried out in July 1989, when dry conditions often make buried archaeology most legible in growing crops. The circular outline suggests an enclosed settlement, possibly a ringfort of the early medieval period, though no excavation has confirmed the date or function. Ringforts, known in Irish as raths or lios, were typically farmsteads enclosed by an earthen bank and ditch, and were built in their thousands across Ireland between roughly the fifth and twelfth centuries. The cropmark here hints at possible entrances on the eastern and south-south-western sides. More intriguingly, two closely spaced linear cropmarks cut across the corner of a field to the north-east, suggesting additional buried features of uncertain character. The site does not stand in isolation either; three further enclosures lie to the south-east in the same field, making this a corner of the landscape that was clearly organised and occupied in ways that have since disappeared beneath the soil.