Beneath or beside it lies a souterrain, an underground passage or chamber of the kind that appear throughout early medieval Ireland, typically used for storage, refuge, or both. The entrance to this one, once recorded inside the hut itself, can no longer be found. What remains visible is a single roofing slab protruding from the ground to the north-west of the hut, with a gap beneath it large enough to accept a ranging rod, which, when inserted, travelled approximately two metres before meeting resistance.

The hut itself is a corbelled drystone structure, meaning its walls were built by layering flat stones with each course slightly overhanging the one below, creating a self-supporting dome without mortar. It measures 5.25 metres in diameter internally, with walls between 1.8 and 2.2 metres wide and up to 2.05 metres high, proportions that suggest considerable effort and permanence. Set into the north-western wall is a lintelled chamber, 1.8 metres long, 0.72 metres wide, and 1.45 metres high, accessible from inside the hut. The entrance to the hut itself faces south-west. Judith Cuppage documented the site in 1986 as part of an archaeological survey of the Dingle Peninsula, recording both the hut and its associated souterrain as distinct but related features. Two more recent walls extending westward from the hut have since created an irregular enclosed passage up to its entrance, complicating any reading of the original approach.