In the wet pastureland of Longford Demesne in County Sligo, there was once a ringfort, one of the roughly 45,000 or so circular enclosures, typically dating from the early medieval period, that once served as farmsteads across Ireland. Today, nothing definitive of it remains above ground, and yet the site has not quite vanished entirely.

The 1837 edition of the Ordnance Survey six-inch map, one of the earliest and most methodical cartographic surveys of the Irish landscape, clearly depicted a circular enclosure at this location. By the time the site was examined in more recent years, it had been levelled, most likely through agricultural activity over the intervening centuries. What remains is a low circular rise of approximately twelve metres in diameter, its origin and significance uncertain. It may be a faint echo of the original earthwork, or it may be entirely unrelated. No definitive archaeological material has been identified there.