On a ridge in County Waterford, a roughly circular earthwork sits overgrown with scrub, its banks still legible in the landscape after what was likely well over a thousand years. What makes this enclosure quietly odd is a detail built into its southern bank: a souterrain, an artificial underground passage or chamber, typically constructed during the early medieval period in Ireland as a place of storage, refuge, or both. The two features together, the enclosing bank and the subterranean structure, suggest a settlement of some consequence, though the site gives little away to a casual observer.

The enclosure measures roughly 33 metres east to west and 31 metres north to south, placing it at a modest but purposeful scale. Its earthen bank, between 2.5 and 3.5 metres wide, retains traces of internal stone-facing, indicating that it was not simply piled earth but a constructed boundary with some engineering behind it. The interior height of the bank reaches up to 1.4 metres, the exterior somewhat less, and unusually there is no visible fosse, the defensive ditch that typically accompanies earthworks of this kind. Two gaps exist in the bank, one at the east-northeast and one at the southwest, each around 1.8 metres wide, though whether either represents the original entrance remains unclear. The enclosure sits at the northern end of a broad north-to-south ridge, a position that would have offered reasonable visibility across the surrounding ground.