A souterrain is an underground passage or chamber, typically stone-lined, built during the early medieval period in Ireland and used variously for storage, refuge, or both. This one leaves no visible surface trace whatsoever, making it one of those archaeological entries that records a presence precisely by noting an absence.

What little is known comes from a report made to the National Museum of Ireland by a D. Nyhan in 1932, though no details of what was observed were preserved alongside it. The souterrain sits within a circular enclosure, a type of feature often associated with early ecclesiastical or secular settlement, and that enclosure was itself later reused as a burial ground, layering one community's relationship with the land on top of another's. The combination is quietly suggestive: an underground structure, a bounded circular space, and generations of the dead, each stratum making the previous one harder to read. McCarthy noted the site in 1977, but the record has not grown much richer since Nyhan's sparse communication nearly a century ago.

There is nothing to see at Dromore now, at least not above the surface. The site exists most fully on paper, a coordinate and a reference number pointing to ground that keeps its own counsel.