A souterrain, an artificial underground passage or chamber typically built during the early medieval period and associated with nearby settlement, is recorded here within a rath, yet leaves no trace whatsoever on the surface. The rath itself, a roughly circular earthen enclosure used as a farmstead in early medieval Ireland, gives no outward sign that anything tunnels beneath it.

The site was formally listed in the Record of Monuments and Places in 1995, which places it among thousands of archaeological features across Ireland afforded legal protection. That listing confirms the souterrain's existence as a known quantity, even if its precise dimensions, construction, and condition remain unverifiable from above ground. Souterrains were generally used for storage, refuge, or both, their cool, dark interiors well suited to preserving food or sheltering people in times of danger. Here, without any visible surface disturbance, the underground structure is essentially a feature known only on paper, its physical reality entirely hidden.