Aerial photographs reveal a ring-ditch sitting at the very centre of the inner enclosure of a rath, a type of circular earthen farmstead common across early medieval Ireland. That alone would make it noteworthy, but the feature is joined to a second ring-ditch to the south-east, the two forming a conjoined pair rather than a single, self-contained monument.

A ring-ditch is essentially the buried or crop-marked trace of a circular ditch, often the remnant of a prehistoric burial mound whose earthen mound has long since been ploughed or eroded away. Here, the second ring-ditch measures around eight metres in diameter and is open on its south-eastern side, which has led to the suggestion that it may actually incorporate the original entrance to the rath's inner enclosure. Whether the ring-ditches predate the rath and were absorbed into it, or whether the arrangement was more deliberately planned, is the kind of question the landscape does not easily answer from ground level. The site sits on fairly level ground, which is part of why the features remained invisible to ordinary observation for so long, showing themselves only when seen from above, where differences in soil moisture and crop growth betray what lies beneath.