It survives only as a notation on a nineteenth-century map, a circle inked onto the Ordnance Survey's six-inch sheet of 1842, marking a rath that was already on borrowed time.

Ringforts, known in Irish as raths or liosanna, were enclosed farmsteads built predominantly during the early medieval period, roughly between the fifth and twelfth centuries. Typically circular, they were defined by one or more earthen banks and ditches enclosing a domestic space. Thousands survive across Ireland, but many others have vanished, lost to the same pressures that shaped every agricultural landscape: land clearance, field drainage, and the steady encroachment of lanes and buildings. At Knockane, the OS surveyors recorded the site as a circular enclosure in 1842, but by the time of more recent investigation it had been levelled entirely, with no visible trace remaining at the surface. A boreen, the kind of narrow rural lane connecting a main road to a farmhouse, had been cut directly through the site, bisecting whatever remained of the original earthworks.

What makes this site worth noting is precisely its absence. It represents a category of loss that is easy to overlook: not dramatic destruction, but a slow erasure carried out through ordinary rural use, a lane extended here, ground levelled there, until the archaeological feature dissolves into the working landscape around it. The 1842 map survives; the rath does not.