A fulacht fia, to give it its Irish name, is a prehistoric cooking site, typically identified by a horseshoe-shaped mound of fire-cracked stone and charcoal left behind after repeated cycles of heating stones and dropping them into a water-filled trough to bring it to the boil. Thousands of these sites are recorded across Ireland, but each one represents a moment of ordinary prehistoric life preserved by accident, and the pair at Shanganagh are no exception.

The two fulacht fia sites at Castle Farm, Shanganagh, were excavated in 1990 by Paddy Healy, ahead of a housing development that would eventually cover the ground entirely. The work was carried out in advance of construction, the kind of salvage archaeology that has quietly recovered an enormous amount of Irish prehistory since the development boom of the late twentieth century. According to information provided by Rob Goodbody, the sites lay to the east of Kituc Church, a medieval ecclesiastical site recorded in the national monuments register. That proximity to a later historical landmark is a reminder of how layered the Irish landscape tends to be, with Bronze Age activity, medieval settlement, and modern housing all occupying the same ground in succession.

Because the excavation was conducted in advance of development, there is nothing visible at this location today. The housing estate has long since been built. What remains is the record, held in the archaeological archive, of two sites that existed in this corner of south Dublin for several thousand years before they were finally disturbed. For anyone interested in the broader context, the nearby Kituc Church site offers a point of reference in the landscape, and the National Monuments Service database holds the formal record of both fulacht fia sites alongside the ecclesiastical remains. The story of Castle Farm, Shanganagh, is less about what can be seen and more about what was briefly visible in 1990, before the ground closed over it again.