The ground is flat, the grass and tillage unremarkable, and there is nothing to catch the eye at ground level. Yet somewhere beneath the soil lies the outline of an oval enclosure, roughly 35 metres across, invisible to anyone standing on it but legible from the air as a cropmark, the kind of faint but eloquent signature that buried archaeology leaves in dry summers when the vegetation above a filled ditch grows differently from the crops around it.

The enclosure sits on a north-south terrace along the eastern side of the Nore and Dinin river valleys, with the land falling away to the west toward the flood plain. It was captured in an aerial photograph taken on 16 July 1971, part of the Cambridge University Collection of Aerial Photography. What the photograph shows is a wide fosse, the term for a defensive or boundary ditch dug around an enclosure, tracing a roughly oval shape in the crop. Such enclosures are common in the Irish landscape, the traces of early medieval settlements, farmsteads, or ritual sites, but the majority announced themselves long ago through upstanding earthworks or stonework. This one has sunk entirely below the surface, surviving only as a chemical memory in the soil and a differential blush in a summer crop, noticed once, from altitude, more than fifty years ago. The western views from the terrace, across the river valleys and flood plain, are described as particularly good, which may or may not have been a consideration for whoever chose this spot, at whatever point in the long human occupation of this part of Kilkenny.