Local tradition around the ringfort at Toor speaks of a cave, and that word, passed down through generations, is almost certainly a folk memory of a souterrain, an underground passage or chamber built during the early medieval period, typically from dry-laid stone, and used for cold storage, refuge, or both. No opening has ever been confirmed, but the ground inside the ringfort dips and buckles in ways that suggest something hollow lies below.

The site sits on a wet, marshy slope facing east, at the lower edge of the Slievenamon foothills in County Tipperary. The ringfort itself, a roughly circular enclosure defined by an earthen bank and once a common form of farmstead in early medieval Ireland, is a known feature of the landscape here. The possible souterrain, if it exists, would likely be associated with that settlement, constructed beneath or just inside the enclosure as an ancillary structure. What makes this particular case quietly compelling is precisely its ambiguity: the tradition persists, the terrain is suggestive, but the entrance, if there ever was one, has either collapsed or been buried under centuries of soft ground and encroaching marsh.