That detail alone sets it apart from many of Ireland's souterrains, the stone-lined underground chambers and passages typically built during the early medieval period, used for storage, refuge, or both, and which are often cramped and difficult to navigate. Here, the scale suggests something more substantial, though the full extent of the system remains poorly documented.

What little is known points to a site that slipped between the official surveys. The 1840 to 1841 Ordnance Survey mapping makes no mention of it at all. It appears only on the 1916 edition, and even then simply as 'Cave', a label that tells you more about how local knowledge fed into later cartography than about the structure's actual age or purpose. A fieldbank running northwest to southeast cuts directly through the site, suggesting that later agricultural activity reshaped the landscape around and possibly over the souterrain without fully obscuring it. In the field to the northeast, a number of mounds are said by local people to be connected to the souterrain system, raising the possibility that what survives above ground is only a fragment of a more extensive arrangement beneath.