The hollow sits a little north of centre within a univallate rath, a type of enclosed farmstead typical of early medieval Ireland, defined by a single surrounding bank and ditch. A probable air-vent, still visible where the bank faces northeast, opens onto the outer face about 0.6 metres above the present ground surface, suggesting the underground passage once extended in a northeast direction. The souterrain itself, an underground stone-built tunnel associated with raths and used variously for storage, refuge, or concealment, is no longer accessible.

The site was recorded as part of the Dingle Peninsula Archaeological Survey, published in 1986 under the editorship of J. Cuppage, a comprehensive survey of the Corca Dhuibhne region that brought systematic documentation to a landscape dense with prehistoric and early historic remains. The rath and its buried souterrain sit within a valley defined by the Finglas river, a relatively sheltered east-facing position that would have suited a small farming settlement of the early medieval period. What remains above ground is modest: a bank, a depression, and a small opening in the earthwork's face that most walkers would pass without a second glance.