On an east-facing slope south of Glendonagh House in Ballydonagh More, County Cork, there lies a circular enclosure of roughly forty metres in diameter that survives today only on paper. It has been levelled, leaving no visible surface trace whatsoever. The ground holds no earthwork, no ditch, no rise in the pasture to suggest anything once stood or was defined here.

What makes this particular absence so quietly interesting is the paper trail it left behind. Ordnance Survey six-inch maps from 1842, 1903, and 1934 each record the same roughly circular form, with one notable anomaly: a straight side to the east, departing from the otherwise curved perimeter. Circular enclosures of this kind are commonly associated with early medieval ringforts, which served as enclosed farmsteads rather than military fortifications, though without excavation it is impossible to assign this one to any particular period or function. The 1842 map adds a further detail: trees had been planted around the edge by that date, suggesting the site was still recognisable as a feature in the landscape and perhaps even deliberately maintained. Between 1842 and the present, something erased it entirely, most likely agricultural improvement or land clearance at some point in the intervening decades.