Today, the only surface evidence is a small depression filled with loose stones, which is a quiet and easy thing to miss entirely. Yet that hollow marks what was once a souterrain, an underground structure of the kind built throughout early medieval Ireland, typically to serve a nearby settlement as a place of refuge, cool storage, or concealment.

The souterrain sat within the western half of a rath, the circular earthen enclosure that would have enclosed a farmstead, probably during the early medieval period. A marginal note recorded by McCaffrey in 1952 gives some sense of the original scale: a curving passage of around ten metres leading to a chamber roughly five metres by two and a half metres. That is a modest but usable space, and the curving layout is characteristic of souterrains designed to be defensible, since a pursuer could not see or rush straight through. Whether it was blocked deliberately, collapsed gradually, or was robbed of its stone over the centuries is not recorded. What remains is the depression, the rath earthwork nearby, and that single descriptive note made by someone who apparently still found something worth measuring.