But when topsoil was being stripped for a residential development at Clarina Village in County Limerick, that is precisely what emerged, and it turned out to be a well-preserved example of one of Ireland's most intriguing prehistoric site types. A fulacht fia, sometimes written fulacht fiadh, is broadly understood to be a Bronze Age cooking or processing site, typically consisting of a water-filled trough, a hearth, and a mound of discarded burnt stone built up over repeated use. Stones were heated in a fire, dropped into the trough to bring the water to a boil, and then raked out once spent, creating the characteristic spreads of shattered rock that archaeologists still find scattered across the Irish landscape in their thousands.

The Ballybrown site was excavated between 29 September and 15 October 2003 by Ken Wiggins, under licence number 03E1603. The trough cut into the subsoil measured 4.72 metres east to west, 3.22 metres across, and reached just over a metre in depth. Its lower fill was a black silty clay dense with burnt sandstone, the accumulated residue of whatever activities had taken place here. Above that, a secondary fill yielded two wooden stakes and numerous other fragments of worked wood, suggesting some form of structural use or repair at a later stage in the site's life. A smaller ancillary pit, roughly 1.32 metres square and 0.4 metres deep, sat nearby, containing its own scatter of wood fragments and burnt stone. Several other pit-like features were identified across the site, apparently contemporary with the trough, giving the whole complex a maximum extent of around thirty metres east to west by twenty metres north to south. The site had been levelled over time, and a network of narrow drainage channels of modern origin had also cut across it.

The site is no longer visible; it was identified and recorded during development monitoring, which means the excavation itself was the final chapter. What survives is the archival record, accessible through the excavations.ie database and summarised in Ken Wiggins's published report. For anyone interested in fulachta fia more broadly, County Limerick has numerous examples, and the type is well represented in the National Monuments record. The Clarina discovery is a useful reminder that these sites frequently survive as little more than a subsurface stain and a scatter of shattered stone, invisible until machinery moves the ground above them.