They belong to a souterrain, an underground stone-lined passage built in early medieval Ireland, typically for storage or refuge, and what survives here is just enough to confirm it existed, and not quite enough to tell the whole story.

The souterrain sits in the north-western quadrant of a cashel, a type of circular stone enclosure used as a farmstead or small defended settlement in early medieval Ireland. A later field wall has since cut across the interior of the cashel, isolating this corner from the rest of the original space and adding a layer of agricultural history on top of an older one. Where the capstones have shifted or left gaps, a drystone passage becomes visible below: approximately three metres long and 1.3 metres wide, oriented roughly northeast to southwest. At both ends of this passage, undulations and depressions in the ground suggest the souterrain once extended further in each direction, with the missing sections either collapsed over time or removed when someone, at some point, needed the stone for something else. Quarrying of this kind was common across rural Ireland, and many souterrains survive only in fragments because their carefully dressed stone proved too useful to leave in the ground.