To the untrained eye it reads as nothing more than a slight unevenness in the ground, but beneath the turf lies a spread of burnt and fire-cracked stone, the characteristic signature of a fulacht fia. These sites, found in their thousands across Ireland, are the remains of ancient cooking places, typically Bronze Age in date, where water was boiled in a trough by dropping heated stones into it. The stones fracture with repeated heating and quenching, and over time the discarded fragments accumulate into a horseshoe-shaped mound around the trough. The mound at Knockatoumpane is one such accumulation, grass-covered now and quietly dissolving back into the field.

The site sits in land once associated with a man named Daniel Cremin, and was among a cluster of three fulachta fiadh noted in this general area by a researcher named Bowman in 1934. That record, published in the journal entry numbered to page 710, grouped this example with two neighbouring sites, suggesting the immediate landscape was used repeatedly, perhaps over generations, by people returning to the same reliable water source beside the stream valley below. The precise date of use at Knockatoumpane has not been established, but the form and context are consistent with the Bronze Age pattern seen across Munster, where fulachta fiadh tend to cluster near running water, which was both practically necessary for filling the trough and perhaps significant in less purely functional ways.