The entry is lintelled, meaning a horizontal stone slab forms its threshold, and beyond it lies a roughly D-shaped cavity with drystone sidewalls inclining inward to carry two roof lintels. A carefully constructed square recess, no wider than thirty centimetres, is built into the north wall, complete with its own slab floor and a shallower cavity beneath it, a split-level niche whose purpose is far from obvious. The back wall has lost its stone facing entirely, leaving bare earth in its place, and a domed mass of soil and rubble now fills the base of the chamber, concealing the original floor and the lower sections of the walls. What remains visible is cramped and difficult to read.

A souterrain is an underground stone-built passage or chamber, typically associated with early medieval raths, the circular earthen enclosures that once served as farmsteads across Ireland. This example sits close to the north-eastern arc of just such an enclosure, and it almost certainly formed part of a larger network. The shallow surface depression that extends roughly two metres to the south-east of the opening, and the rising slope to the north-west where further passages may lie buried, both suggest that what survives is only a fragment of a more extensive structure. The collapse of the rear wall has contributed significantly to the infilling, and the accumulated soil now rises to within half a metre of the roof lintels, making it impossible to establish the chamber's original height beyond a minimum of around seventy-five centimetres. Whether the souterrain was used for storage, refuge, or something else entirely remains, for now, an open question.