The subsidence is tentative evidence of a souterrain, an underground stone-lined passage or chamber typically constructed during the early medieval period, most often in association with ringforts, the circular enclosed farmsteads that were once the standard unit of rural settlement across Ireland. Souterrains served various purposes, most likely storage, refuge, or both, and they tend to announce themselves only when the roof, whether of stone lintels or compacted earth, finally gives way.

The ringfort at Meenahony, recorded in the Archaeological Inventory of County Cork published in 1997, contains this suggestive hollow in its interior. Whether a formal souterrain lies beneath has not, on the basis of available information, been confirmed through excavation. That ambiguity is itself characteristic of the archaeological record in mid Cork, a landscape densely scattered with earthworks that have never been fully investigated. The collapsed ground may represent a genuine underground structure, or it may reflect natural settling; without excavation, the question remains open.