What makes it worth a second look is what lies beneath: the most extensive souterrain yet recorded on the entire peninsula. A souterrain is an underground stone-lined passage or chamber, typically constructed during the early medieval period and used variously for storage, refuge, or both. This one is accompanied by traces of at least two hut foundations within the enclosure, and the whole complex amounts to a small but layered settlement that time has done its best to erase.

The site attracted attention beyond its archaeology when a landowner's father was drawing stones from the ringfort, a common enough fate for ancient field monuments in rural Ireland. During that clearance work, a small slab-lined grave was uncovered, and inside it an iron box containing coins. The details of the coins, their date or denomination, are not recorded, but the find is the kind of discovery that tends to surface once and then quietly disappear into family memory. Earlier scholarly interest came from Deane, who in 1893 noted the foundation of a hut overlying the entrance to the souterrain itself, suggesting that the site was used across more than one period, with later structures built directly on top of earlier ones. The archaeological survey of the Dingle Peninsula, published by J. Cuppage in 1986, recorded two possible hut foundations: one in the north-west part of the interior and another associated with the souterrain entrance in the north-east sector.