At Ballybrowney in County Cork, the construction of the N8 Rathcormac-Fermoy Bypass in 2003 exposed the western half of a roughly circular Bronze Age enclosure, one of three clustered within a remarkably tight area. The enclosure itself was modest in scale, around 22 metres in diameter, but the fact that two further enclosures of similar date sit within 50 metres of it suggests this was once a place of some sustained, deliberate activity.

The enclosure was defined by a slot-trench, a narrow channel cut into the ground that would originally have held a timber palisade or structural uprights, with evidence of stone lining preserved along the edges. Inside, archaeologists found a scattering of small post-holes and stake-holes, the compressed signatures of wooden posts that no longer survive. Two finds came from the fill of the trench itself: a single sherd of Bronze Age pottery and a piece of metal slag. The pottery sherd ties the site broadly to the period between roughly 2500 and 500 BC. The slag is quietly significant, suggesting some form of metalworking in or near the enclosure, though a single fragment is too little to say much more with confidence. The excavation was led by Claire Cotter and reported in 2006. What the enclosure was actually used for, whether as a domestic space, a livestock compound, or something else entirely, remains open. The other two enclosures nearby were recorded but are not described in detail alongside this one, leaving the full picture of the Ballybrowney cluster incomplete.