The building has no discernible entrance, which makes it either an puzzle of survival, with a doorway long since collapsed beyond recognition, or a reminder of how incomplete our understanding of these spaces can be.

The structure is rectilinear in plan, measuring four metres east to west and just over three metres north to south internally, and is defined by drystone walls between half a metre and a metre thick, surviving to a height of roughly forty centimetres. It sits pressed against the cashel wall, a cashel being a stone-built ringfort enclosure of the kind found widely across early medieval Ireland, typically associated with a farmstead of some status. Whether this small hut was a storage cell, a shelter, or served some other domestic function is not recorded. Its date is listed as indeterminate, which in archaeological terms reflects genuine uncertainty rather than a failure to look closely enough. The drystone construction, the rectilinear form, and the position inside the cashel boundary are the only clues available, and they do not resolve neatly into a single period or purpose.