These low, horseshoe-shaped mounds, typically found near water, are the remains of ancient cooking sites, though their exact purpose has been debated for decades. The basic mechanism is well established: stones were heated in a fire and dropped into a water-filled trough, bringing the water rapidly to a boil. The crescent of burnt and shattered stone that built up around the trough over repeated use is what survives today, sometimes as little more than a slight rise in a field, sometimes as a clearly defined mound. The examples recorded at Belline and Rogerstown in County Kilkenny belong to this widespread tradition, quietly embedded in the farmland of the Nore valley region.

Fulachtaí fia are generally associated with the Bronze Age, roughly 1500 to 500 BC, though some sites have yielded earlier or later dates through excavation. The name itself is medieval Irish, loosely translating as something like "cooking pit of the deer", though whether these sites were primarily for cooking meat, brewing, bathing, or some combination of uses remains a matter of ongoing discussion among archaeologists. Kilkenny as a county has a significant concentration of them, which is not unusual given how closely their distribution follows the availability of suitable water sources and low-lying ground. The Belline and Rogerstown sites sit within this broader pattern, two points in a landscape that was clearly well used during prehistory, even if the details of their individual histories have not yet been fully documented.