The site is recorded as containing a souterrain, an underground stone-lined passage or chamber typically built during the early medieval period, often used for food storage, refuge, or both. What makes this particular example unusual is the degree of uncertainty surrounding it: the evidence comes from local information alone, reporting a cavity noticed within the interior of the ringfort at some point in the past. There is no visible surface trace today.

The ringfort itself, a type of enclosed farmstead common across early medieval Ireland, provides the broader context. Such enclosures were in use roughly between the fifth and twelfth centuries, and souterrains are frequently found within them, cut into the earth beneath the living area and often accessible through a narrow opening in the ground. That a cavity was noticed here at some point suggests the structure may once have been partially exposed, perhaps through subsidence or agricultural disturbance, before closing over again. Whether the original souterrain survives intact underground, or has partially collapsed, is not known.