That quiet disappearance is more or less the full extent of what is formally recorded about this souterrain, an underground passage or chamber typically constructed during the early medieval period, often associated with nearby ringforts and used variously for storage, refuge, or concealment. The brevity of the record is itself telling.

The souterrain sits within, or very close to, what has been identified as a possible ringfort, a class of enclosed farmstead common across Ireland between roughly the sixth and tenth centuries. Ringforts, usually circular earthen banks surrounding a domestic or agricultural space, are among the most numerous field monuments in the Irish countryside, and they frequently conceal souterrains beneath their interiors or just inside their banks. What makes the Gneeves example notable in its small way is the local memory attached to it. At some point in the past, people in the area knew the underground entrance and could enter it. That knowledge has since faded, and the opening, if it still exists at ground level, is no longer identifiable in any documented account. Whether the feature collapsed, was filled in, or simply became overgrown and forgotten, no record says.