Somewhere on the Curragh, the wide flat plain in County Kildare long associated with sheep grazing and horse racing, there may once have been a circular enclosure, or there may not. The uncertainty is the point. A single cartographic source, Taylor's Map of County Kildare from 1783, shows a circular feature in this general area, but when the Ordnance Survey produced its far more systematic six-inch mapping in the nineteenth century, nothing corresponding to it was recorded. When fieldwork was later carried out on the ground, no visible surface traces were found either.

Circular enclosures in Ireland can represent many things, from prehistoric ring forts, which were typically earthen-banked farmsteads, to later ecclesiastical enclosures or even features of relatively recent land management. Without surviving traces, it is impossible to say what this one was, or indeed whether it existed as a meaningful structure at all. Taylor's 1783 map, though a significant early county-level survey, was not produced with the same rigour as later Ordnance Survey work, and small circular symbols sometimes crept in where topographic reality was ambiguous or where the surveyor was working from secondhand information. The feature may have been demolished or levelled in the decades between 1783 and the OS surveys, or it may simply have been a cartographic error, a mark that outlasted whatever prompted it.