No depression in the ground, no exposed stonework, no local landmark marks the spot. The structure has effectively vanished, at least from the surface, leaving only a mid-twentieth-century written record as evidence it was ever there.

A souterrain is an underground passage or chamber, typically dry-stone built, associated with early medieval settlement in Ireland. They were used for storage, refuge, or both, and are commonly found within cashels, the circular stone enclosures that served as farmsteads during the early Christian period. At Ballymaquiff, the souterrain sat within what may have been one such cashel, though the enclosure itself is tentatively classified rather than firmly confirmed. The detail about the L-shaped plan comes from a 1952 reference by McCaffrey, who recorded it as a notably large example. That description is now the primary thing distinguishing this site from an unremarkable patch of ground. Whether the souterrain collapsed, was filled in, or simply became buried beneath accumulated soil is not recorded.

There is nothing for a visitor to see here, and that is, in its own way, the point. The site is a reminder that the archaeological record of early medieval Ireland is substantially underground and substantially incomplete, preserved more often in archive references than in visible remains.