Somewhere beneath a cultivated field on a west-facing slope in County Cork, a circular enclosure roughly forty metres across has been completely levelled. No bank, no ditch, no shadow in the grass remains to suggest it was ever there at all.

The only record of its shape comes from the Ordnance Survey six-inch map of 1842, where it appears as a hachured circle, the cartographers' convention for marking a raised or defined earthwork, with a planting of trees within its boundary. Enclosures of this kind are typically the remains of a ringfort, a type of farmstead built throughout early medieval Ireland, usually consisting of a circular area enclosed by one or more earthen banks and ditches. They were the ordinary domestic settlements of farming families across many centuries, and thousands survive across the Irish countryside. This one does not. At some point between that 1842 survey and the present, the enclosure was levelled, most likely through agricultural improvement, and the field was given over to tillage.