At Rowgarrane in County Cork, a ringfort, known in Irish as a rath, once occupied a gently sloping, north-facing patch of pasture. A rath is a roughly circular earthen enclosure, typically defined by a bank and ditch, built during the early medieval period and used as a farmstead. This one measured approximately 35 metres in diameter. Today, nothing of it remains above ground.

The site's short documentary history is a study in gradual erasure. On the Ordnance Survey six-inch map of 1842, it was recorded clearly, marked with hachures indicating a circular enclosure. By the time later editions of the same map were produced, that confident depiction had softened into something more ambiguous: just a curved field fence, the enclosure's outline absorbed into the working geometry of the landscape. At some point between those surveys and the present, whatever earthworks remained were levelled entirely, leaving the pasture smooth and the site archaeologically invisible from the surface.