It survives only as a cartographic ghost, recorded on the Ordnance Survey six-inch map of 1842 as a hachured circular enclosure, those small radiating lines used by surveyors to indicate an earthwork or raised feature in the landscape. Today, there is no visible surface trace whatsoever.

Ringforts, known in Irish as raths, were the most common form of rural settlement in early medieval Ireland, typically consisting of a circular area enclosed by one or more earthen banks and ditches. They were used as farmsteads, most likely between roughly 500 and 1000 AD, and tens of thousands of them once dotted the Irish countryside. The Bawnishal example was present, at least in some form, when Ordnance Survey teams moved through County Cork in the early nineteenth century, methodical enough in their work to note and hachure the enclosure on their maps. At some point between that survey and the present, the earthworks were levelled entirely, most probably by agricultural activity, leaving the pasture smooth and giving no hint to a passing eye that anything lies beneath.

What makes Bawnishal quietly interesting is precisely that absence. The 1842 map becomes the only real evidence that this particular rath ever stood, a circular mark on paper where there is now only grass. It is the kind of site that reminds you how much of the Irish early medieval landscape has been quietly erased, field by field, over the past two centuries.