The evidence they left behind is the kind that archaeologists recognise immediately and the rest of us walk past without a second thought: a low, dark spread of charcoal and fire-cracked stone, roughly twelve metres by eight, sitting quietly beneath a coniferous plantation until construction work brought it to light.

A fulacht fia is one of the most common prehistoric monuments in Ireland, yet its ordinariness does not make it any less quietly compelling. The basic idea is straightforward: stones are heated in a fire, dropped into a water-filled trough to bring it rapidly to the boil, and discarded when they crack. Over time, the rejected stone and charcoal build up into a distinctive mound. What the boiling water was actually used for, whether cooking, bathing, textile processing, or something else entirely, remains a matter of genuine debate among archaeologists. The Forgney example, excavated by Jonathan King under licence number 16E0446 during preparatory works for the Center Parcs leisure development, fits the classic pattern closely. Beneath the burnt spread lay two separate pits or troughs. The larger measured 2.3 metres by 1.2 metres; the smaller, 1.8 metres by 1.6 metres and nearly half a metre deep. Both would have held water drawn from the nearby stream or drain that still traces the townland boundary on a northeast to southwest line. No artefacts were recovered from the site, which is not unusual; fulachta fía tend to be anonymous places, defined by process rather than possession. Radiocarbon or typological dating placed the feature in the Late Bronze Age, somewhere in the broad span between roughly 1200 and 500 BC.

The site no longer exists in any visible form accessible to a casual visitor, having been excavated to completion before the leisure development proceeded. What it leaves behind is something more intangible: a reminder that the soggy ground beside an unremarkable drainage ditch in the Irish midlands was once a working place, purposeful and regularly used, by people whose names and intentions are entirely lost to us.