A cashel is a type of early medieval stone-walled enclosure, typically circular, used to define and defend a farmstead or settlement, and within the one recorded at this site, the antiquarian Thomas Johnson Westropp noted in 1905 what he described as the entrance to a "cave" in the garth, meaning the open courtyard enclosed by the cashel walls. Whether what he saw was a true souterrain, an underground stone-lined passage often associated with early Irish ringforts and cashels and used for storage or refuge, remains unconfirmed.

Westropp was a prolific recorder of Clare's field monuments in the late nineteenth and early twentieth centuries, and his brief note has preserved a detail that fieldwork nearly a century later could not verify. When the site was inspected in August 1998, no visible surface trace of the possible souterrain could be found. That absence does not mean it has gone entirely. Souterrains are frequently concealed by collapse, vegetation, or accumulated earthen material, and their presence is sometimes only confirmed by excavation or ground survey. What Westropp saw at the entrance to the garth may still lie beneath the surface, intact or fallen in, waiting on more precise investigation than a visual inspection can offer.