The earthwork at Gortnacreha, roughly thirty metres in diameter, was levelled around 1967, its single encircling bank and surrounding fosse, the shallow ditch that typically accompanied such a bank, erased by agricultural clearance. Despite that, the ground has been left largely alone since, and the area has grown thick with vegetation, caught in an odd liminal state: too altered to read as archaeology, too untouched to read as ordinary farmland.

Ringforts, also called raths, were the most common form of enclosed settlement in early medieval Ireland, typically dating from roughly the sixth to the twelfth centuries. They were built to demarcate and protect farmsteads, with earthen banks and ditches serving as boundaries rather than fortifications in any serious military sense. The Gortnacreha example sat on a gentle south-west-facing slope and was clearly legible on both the 1904 and 1938 editions of the Ordnance Survey six-inch maps, where the northern arc of the enclosure was already being clipped by a roadway. What survives beneath the overgrowth, however, is arguably the more interesting feature: a souterrain in the northern half of the interior. Souterrains are dry-stone or rock-cut underground passages, usually associated with ringforts, and thought to have served as refuges, cool-storage cellars, or both. This one remains, even if the enclosure that once gave it context no longer stands.