These structures appear in their hundreds across Ireland, most often associated with ringforts, and their precise purposes remain debated. Scholars have suggested they served as cold stores, places of refuge, or both. What makes any individual souterrain worth pausing over is the simple fact of its concealment. The ground above gives little away.

The Killarney souterrain is recorded as a known archaeological monument, though detailed documentation specific to this site is not yet publicly available. That gap in the record is itself telling. Ireland's souterrains were largely ignored by antiquarians who preferred the drama of standing stones or tower houses, and many were only formally identified during systematic field surveys carried out in the latter half of the twentieth century. The townland name, Killarney, derives from the Irish, and is unrelated to the more famous Kerry town of the same spelling; Kilkenny contains several Killarney townlands, each with its own quiet accumulation of history beneath the grass.