The site is not marked, not excavated, and not visible at ground level. It exists, in a sense, only as a story passed down from the moment it briefly surfaced and was then deliberately put back into the dark.

A souterrain is an artificial underground chamber or passage, typically constructed during the early medieval period in Ireland, usually built from drystone walling and used for storage, refuge, or both. In the 1940s, a local farmer at Boolareagh came across what appears to have been one such structure. The discovery was noted by the archaeologist Etienne Rynne, whose 1965 reference remains the main documentary trace of the find. According to local accounts, the feature was filled in shortly after it was uncovered, presumably to make the land safe or workable again. Whether the infill was loose material or something more permanent, the structure has not been investigated since, and nothing distinguishes this patch of slope from any other.