The same word reappeared on the 1921 edition of the same map, in the same spot, with the same quiet confidence. Today, nothing is visible on the ground at all.

What the maps were recording was almost certainly a souterrain, an underground stone-lined passage or chamber typically built during the early medieval period, often connected to a nearby settlement or enclosure. In this case, the feature lay within the northern sector of a rath, the term for a circular earthen ringfort that served as a farmstead and enclosure during early Christian Ireland. Souterrains were used variously for storage, refuge, or ventilation, and their entrances could be concealed deliberately, which may partly explain why this one has left no trace above ground. Whether it collapsed, was filled in, or simply became undetectable over time is not recorded. What is known is that two separate map surveys, nearly a century apart, both acknowledged its existence, suggesting that some physical evidence, or at least a persistent local memory of it, endured into the early twentieth century before disappearing entirely from view.