The name has survived in the area long after the structure itself was erased, which is often how these things go: the earthwork disappears, but the memory of it persists in conversation and in field-names, carrying a faint outline of something older beneath the ordinary agricultural landscape.

A rath, or ringfort, is a roughly circular enclosure defined by one or more earthen banks and ditches, and was typically used as a farmstead during the early medieval period in Ireland. The example at Grange measured approximately thirty metres in diameter and was still visible on the 1842 Ordnance Survey six-inch map, where it appears as a roughly circular enclosure defined by double solid lines running from north-northwest to west-southwest, joined on the western side by a single straight line. The interior and surrounding field were recorded as rough grazing broken by rocky outcrops. At some point after that survey was made, the site was levelled during agricultural reclamation. No surface trace of the banks or ditches now remains. What does remain is a patch of uncultivated ground, roughly twenty-five metres by twenty metres, lying to the north of where the enclosure stood and to the south of a kink in the field boundary. That kink in the boundary is itself a small clue: field boundaries frequently bend or deflect around the edges of old earthworks, preserving the ghost of a feature long after the feature itself has gone. The patch of rough ground became a dumping area when the rest of the field was brought into cultivation, which has left it heavily overgrown but, in an accidental way, largely undisturbed.