There is no mound, no hollow, no crease in the ground to hint at what sits below. The site has been effectively erased from the surface, covered over by the kind of mundane agricultural tidying that has quietly claimed countless archaeological features across Ireland.

A souterrain is an underground stone-lined passage or chamber, typically associated with early medieval settlement and most likely used for storage or refuge. This one sits in the western half of a ringfort at Ballykeating, itself described as levelled, meaning the raised earthen bank that would once have enclosed a farmstead has been flattened. Ringforts were the dominant form of rural settlement in early medieval Ireland, and it was common for a souterrain to be dug within the enclosed area, accessible from inside the protected space. Here, both the enclosure and its subterranean feature have been reduced to near-invisibility, the souterrain's presence known only because it was recorded before the debris accumulated.