This is a fulacht fia, a type of site found in considerable numbers across Ireland, typically interpreted as an ancient cooking place. The usual method involved heating stones in a fire, dropping them into a water-filled trough until the water boiled, and then using that heat to cook meat. The broken, fire-cracked stones were then discarded to one side, and over centuries of repeated use, those discarded stones accumulated into the distinctive horseshoe-shaped or oval mounds that survive today.

The Imogane example sits in marshy ground roughly ninety metres north of a stream, which is entirely typical. Fulachtaí fia are almost always found near water, since the whole process depended on a ready supply. The mound itself is oval in plan, measuring about twelve metres along its longer axis and nearly nine metres across, and rises only around forty centimetres above the surrounding ground. It is a modest presence, but a telling one. What makes this particular location more interesting is that a second fulacht fia lies just twenty-five metres to the north-west. Whether the two sites were in use simultaneously or represent activity at different periods is not recorded, but their proximity suggests this stretch of wet ground beside the stream was returned to repeatedly, perhaps over generations.