At Ardra in County Cork, a circular enclosure roughly forty metres across was recorded on the Ordnance Survey six-inch map of 1842, marked with a dotted line that cartographers typically used to indicate a feature already uncertain or fading at the time of survey. Today, nothing remains visible at the surface. The ground has been turned over to tillage on a north-facing slope, and whatever earthwork once defined this circular space has been ploughed flat, leaving only a map annotation and a grid reference as evidence that anything was ever there.

The site sits approximately fifty metres to the west of a second circular enclosure at Ardra, suggesting that the two features may once have formed part of the same local landscape of settlement or land division. Circular enclosures of this kind are among the most common monument types in Irish archaeology, ranging from prehistoric ceremonial sites to the ringforts, known in Irish as ráth or lios, that served as enclosed farmsteads throughout the early medieval period. Without excavation it is impossible to say which category this particular enclosure belonged to, and the absence of any surface trace makes that question difficult to pursue. What the 1842 map preserves is essentially a last glimpse, caught by surveyors who themselves may have been recording little more than a crop mark or a slight rise in the field.