The 1842 Ordnance Survey marked it clearly: a circular enclosure with the word "cave" noted at its centre, the kind of annotation that signals something underground, something deliberately made and deliberately concealed. By the 1916 edition of the same map, the marking was gone, and the enclosure itself has been levelled so thoroughly that nothing of it survives above the soil.

What was recorded here belongs to a category of monument found across early medieval Ireland. A souterrain is a stone-lined underground passage or chamber, typically associated with a ringfort or enclosed settlement, and thought to have served for storage, refuge, or both. The circular enclosure that once surrounded this one was itself the domestic or agricultural complex within which the souterrain made sense. That enclosure has vanished, but two low mounds still sit in the field, and these are considered likely to be the collapsed remains of the underground structure. The larger of the two is oblong, measuring roughly 10.4 metres by 2.5 metres and rising only about 0.4 metres above the surrounding ground. A second, considerably smaller mound lies approximately three metres to the south-east, measuring around 2.3 metres by one metre and reaching just 0.3 metres in height. These figures come from the North Kerry Archaeological Survey published in 1995 by C. Toal, which documented the site before the enclosure's disappearance from the landscape was complete in any practical sense.

The mounds are unassuming to the point of near-invisibility, the kind of slight irregularities in a field that most people would walk past without a second thought. That is, in its own way, the point: what remains is the faintest outline of something that was once, in early medieval terms, a functioning home and its hidden infrastructure.