It is a corbelled drystone hut, the kind built without mortar, where each ring of stones is laid slightly inward of the one below until the courses meet at the top, forming a self-supporting dome. This one measures just 3.56 metres in diameter and stands 1.3 metres high, compact enough that entering it would have required stooping, yet solid enough to have outlasted whoever built it by a considerable margin.

Structures of this type are found across the Dingle Peninsula, a landscape that preserves an unusual density of early remains. They are generally associated with early medieval activity, though dating individual examples without excavation is difficult. This particular hut sits within the townland of Baile An Gharráin on the Corca Dhuibhne peninsula, a part of Kerry that has long drawn archaeological attention for the sheer variety of what survives above ground. The rocky, marginal terrain that made the slopes of Knockmoylemore poor farmland likely helped protect the structure from later disturbance or reuse as field material.