No earthwork breaks the surface, no ridge or hollow announces itself to a passing walker. The only way it was ever noticed was from the air, when a dry summer caused the buried outline of a fosse, a defensive or boundary ditch, to show up as a cropmark, a phenomenon where differential soil moisture above buried features causes the plants growing over them to ripen at different rates, revealing shapes that the earth itself otherwise keeps quiet.

The enclosure is oval, measuring roughly 36 metres across on its north-west axis and about 47 metres north to south. It came to light in photographs taken on 9 July 1969 and again on 14 July 1970, both times during summer conditions favourable to cropmark formation. Ordnance Survey maps from 1839 and a revision made in 1947 show a field boundary running along the western edge of the enclosure, suggesting the line of the old fosse was still influencing how the landscape was divided even when its origins had long been forgotten. The enclosure does not sit in isolation. A second enclosure adjoins it to the east, and a third, also identified through aerial photography, lies about 30 metres to the west-north-west. The clustering of enclosures like this is a pattern common across early medieval Ireland, where ringforts and related enclosures were often built in proximity, sometimes representing successive phases of activity on the same farm or estate.

Because the enclosure survives only as a cropmark, there is nothing to see at ground level, and visiting in any conventional sense would mean little more than standing in an unremarkable field. Its significance lies in what the photographs revealed: a patch of Kilkenny farmland quietly preserving, in the chemistry of its soil, the shape of a ditch that was dug well over a thousand years ago.