The foundations survive to a height of just half a metre, tracing a rectangle roughly twelve metres east to west and seven metres north to south, and that is more or less all that can be said with certainty. No construction date, no name attached to it, no documentary thread to pull.

A rath, sometimes called a ringfort, is a roughly circular enclosure defined by an earthen bank and ditch, built most commonly during the early medieval period as a farmstead or settlement boundary. This particular example at Moneen contains at least two house sites within its interior, one sitting in the north-west quadrant and another visible in the south-west, suggesting the enclosure was used as a domestic space by more than one structure, though whether they stood at the same time or in sequence is unknown. The rectangular plan of the north-west house is the more legible of the two, its low foundation walls still coherent enough to read as a room, even if what kind of life was lived inside it remains entirely open.