At Reenard on the Iveragh Peninsula in County Kerry, a souterrain, an underground stone-lined passage or chamber typically built in early medieval Ireland for storage or refuge, was noted by a surveyor and subsequently slipped out of local memory entirely. No one nearby seems to recall it. It may be overgrown, collapsed, or buried beneath later activity; its exact condition is unknown.

The record of its existence comes from Skinner's ITA survey, which placed it close to a specific site in the area. The detail was later incorporated into O'Sullivan and Sheehan's thorough 1996 archaeological survey of the Iveragh Peninsula, published by Cork University Press, which catalogued the remarkable density of early and prehistoric remains across this part of south Kerry. That a souterrain should appear in such a survey but leave no trace in living local knowledge is not unusual; many such features were sealed, forgotten, or quietly absorbed into the landscape over the centuries. What makes this one worth noting is precisely the gap between the written record and the blank response it now meets on the ground.