The only reason we know it is there at all is a single aerial photograph taken on 29 July 1996, on which the buried features betrayed themselves as cropmarks, the phenomenon by which buried ditches and banks cause the vegetation above them to grow at subtly different rates, producing patterns that become legible only from the air.

The photograph, catalogued as GB96.GA.27, captures two curving, broadly parallel fosses, each a wide ditch cut into the earth, running up to approximately 80 metres to the north-east, east, and south-east of a nearby enclosure, recorded separately in the archaeological record. The curvilinear alignment of the fosses, and their relationship to that enclosure, suggests they formed part of an associated field system, dividing and bounding agricultural ground in a pattern that curves rather than runs in straight lines, a characteristic often associated with early medieval landuse in Ireland. The enclosure they appear to serve would likely have been a farmstead of some kind, perhaps a ringfort, the circular enclosed settlements that were the dominant form of rural habitation in Ireland from roughly the sixth to the twelfth centuries.