Not a cellar or a later addition, but a souterrain, an underground passage or chamber built in stone and associated with early medieval settlement, the kind of space that might have served for storage, refuge, or both. Its presence beneath this ringfort is one of the details that lifts the site out of the ordinary, even among a county that has more ringforts per square kilometre than almost anywhere else in Ireland.

The fort itself is a rath, the most common type of early medieval enclosure in Ireland, typically dating from roughly the sixth to the tenth century and used as a farmstead by a family of some local standing. This example is nearly circular, measuring 51.5 metres north to south and 50.5 metres east to west, and its proportions are well-preserved. The interior is enclosed by an earthen bank rising 1.7 metres on the inside, fronted by an external fosse, a defensive ditch, cut to a depth of 1.2 metres, and beyond that a counterscarp bank, a secondary outer ridge of upcast earth, standing 0.8 metres high. On the south-eastern side, the bank retains traces of stone facing on its outer surface, a detail suggesting some care in its original construction. A gap of six metres to the west-south-west marks what was likely the original entrance. A modern roadway running north to south has cut through the western edge of the fosse and counterscarp bank, a quiet reminder that these monuments have been quietly absorbed into working landscapes over centuries rather than kept apart from them.

The site sits on a west-facing slope, and the earthworks remain visible as gentle ridges in the pasture. The souterrain recorded in the interior is catalogued separately, but its existence here adds a subterranean dimension to what might otherwise read as a routine enclosure. Looking across the field on a low-angled afternoon, the concentric rings of bank, ditch, and outer bank are most legible as shadow and relief, the geometry of a vanished household just discernible beneath the grass.