This one is notable for what does not. At Ballintue in County Westmeath, on a gentle rise with open views across undulating grassland, there is nothing left to see, and that absence is itself part of the record.

In 1972, a deep depression was observed in the southern quadrant of a ringfort at this location. A ringfort, to give the basic context, is a roughly circular enclosed settlement, typically of early medieval date, defined by one or more earthen banks and ditches. The depression noted inside this one was taken as a possible indicator of a souterrain, an underground stone-lined passage or chamber that was commonly associated with ringforts and used for storage or refuge. Whether the Ballintue depression concealed a true souterrain was never confirmed. At some point after that 1972 observation, the site was levelled, removing whatever surface evidence remained and foreclosing the question entirely. The ringfort itself, recorded separately, still stands nearby, but the feature that might have told a more subterranean story has been erased from the landscape.