What makes the hut particularly arresting is not its size, which is modest at 4.8 metres in internal diameter, but what lies beneath it. A curving souterrain passage, roughly 4.5 metres long, extends out from the interior of the hut. A souterrain is an underground stone-lined tunnel or chamber, typically associated with early medieval Irish settlements and used variously for storage, refuge, or ventilation. Finding one opening directly from within a hut rather than from open ground is an arrangement that draws attention to the deliberate, layered thinking behind even small-scale early Irish architecture.

The hut's walls were built using a corbelling technique, in which stones are laid so that each course projects slightly inward over the one below, eventually converging to form a roof without the need for timber or mortar. The corbelled wall here survives to a maximum height of around 0.9 metres at the north-west, though its outer face is largely buried under accumulated earth, which has both preserved and obscured it. Two opposing gaps in the wall, one facing roughly north-east and another facing south-west, likely represent original entrances or apertures, though the southern portion of the foundations is poorly defined. The site was documented by A. O'Sullivan and J. Sheehan in their 1996 archaeological survey of the Iveragh Peninsula, published by Cork University Press, which brought systematic attention to a landscape dense with early historic and prehistoric remains.