This is a souterrain, an underground passage or chamber constructed during the early medieval period, typically associated with ringforts and used for storage, refuge, or both. What makes this particular example quietly interesting is its form: the tunnel does not run straight but bends back on itself in a curve, leading off from a partially surviving chamber in the northern sector of the enclosing structure.

The souterrain sits just east of a small southward-flowing stream, tucked within a sub-circular univallate cahir, meaning a roughly circular enclosure defined by a single defensive bank or wall. The cahir itself, a stone-built variant of the more commonly earthen ringfort, is now heavily overgrown, its bank reduced to a rubble mound rather than a standing structure. Both the chamber and the tunnel retain visible drystone walling, which suggests the underground element has survived in reasonable condition even as the enclosure above ground has deteriorated. The site was recorded in C. Toal's North Kerry Archaeological Survey, published in 1995, which documented it as part of a broader effort to catalogue the early medieval landscape of the region.