In the townland of Drumkilsellagh in County Sligo, a slight rise in gently undulating pasture marks the site of a ringfort, one of those circular earthen enclosures, typically defined by a raised bank and ditch, that were built across Ireland throughout the early medieval period as farmsteads and places of habitation. Nothing of it remains at ground level. The land simply continues, unremarkable, as if nothing was ever there.

The 1837 edition of the Ordnance Survey six-inch map recorded it as a circular enclosure, already bisected by a road running northeast to southwest, which suggests the monument was under pressure even then. By the time the 1913 edition was surveyed, the enclosure had been reduced to an inverted D-shape, the hachured markings indicating an earthwork of some kind still partially legible on the ground, with a maximum dimension of around twenty metres. Somewhere in the decades between those two surveys, and in the years that followed, whatever remained was levelled entirely. The road that cut across it may well have been the beginning of the end, slicing through the enclosure and gradually eroding any sense of the original form as agricultural land use continued around and over it.