Man-made underground passage in Carrownaraha

Carrownaraha holds a grass-covered hollow beside its rath, hiding three chambers beneath a broken lintel and drystone wall. The passage waits under ordinary turf, large enough to swallow a room yet small enough to forget until darkness takes it. People may have built it for storage, ritual or escape, but the roof has failed and the chambers have gone quiet. What remains is a shape in the earth, deep enough to suggest intention and empty enough to keep its own counsel.