That qualified uncertainty is, in its own way, the whole story. The site is recorded not because anything has been excavated or confirmed, but because a landowner said so, and that local knowledge was thought worth preserving.

A souterrain is an underground passage or chamber, typically constructed from drystone walling and roofed with large flat stones, built during the early medieval period in Ireland, often in association with a rath. A rath, sometimes called a ringfort, is a roughly circular enclosure defined by an earthen bank and ditch, and was the standard form of rural farmstead in Ireland from roughly the fifth to the twelfth century. Thousands survive across the country in varying states of preservation. The rath at Racomane, recorded under its own separate reference, provides the context for this possible souterrain: a large stone positioned at the rath's centre is said, by tradition, to mark or seal an underground feature. No visible remains of any souterrain have been recorded at the surface.

What makes the site quietly interesting is precisely what it lacks. There is nothing to see, no exposed stonework, no collapsed roofing slabs, no dark opening in the ground. The only thing anchoring the possibility is a single piece of inherited local knowledge and a stone that may mean something or nothing at all.