It is a fulacht fia, a type of prehistoric cooking site found in their thousands across Ireland, typically identified by a horseshoe-shaped mound of fire-cracked stone left behind after centuries of use. The basic method involved heating stones in a fire and dropping them into a water-filled trough to bring it to the boil, a process efficient enough that archaeologists have successfully replicated it in experiments. Most fulachta fiadh date to the Bronze Age, roughly 1500 to 500 BC, though some sites were used across much longer periods.

What makes the Kilcolman site quietly interesting is less the mound itself than its immediate context. By 1937, when the Ordnance Survey recorded it at six-inch scale, it had already been reduced in the record to a generic mound, its original character noted but its surroundings encroaching. And it does not stand alone. Approximately fifty metres to the south, on the opposite bank of the same stream, lies a second fulacht fia. The pairing is not unusual in the broader Irish landscape, where such sites often cluster near reliable water sources, but it gives this particular stretch of streambank a certain density of prehistoric activity that the overgrowth now thoroughly conceals. The site is recorded as inaccessible, and there is no indication that this has changed.