They typically appear as low, horseshoe-shaped mounds of fire-cracked stone and dark, charred soil, and the one recorded at Annaghs in County Kilkenny is a quiet example of this remarkably widespread Bronze Age phenomenon.

The term fulacht fia, sometimes translated loosely as "cooking place of the deer" or "wild place for cooking," refers to what archaeologists believe were outdoor cooking sites, though their precise function has been debated for decades. The standard interpretation is that a trough, often timber-lined, was filled with water and heated by dropping stones that had been fired in a nearby hearth. Repeated heating and rapid cooling causes stone to crack and shatter, which explains the distinctive burnt-stone spreads that form the mounds we see today. Most examples in Ireland date to the Bronze Age, broadly between 1500 and 500 BC, though some sites have produced dates ranging outside that window. They tend to cluster near water sources, streams or marshy ground, which would have been essential to their operation. Kilkenny as a county has a reasonable distribution of these sites, reflecting both the density of prehistoric activity in the region and the low-lying, well-watered character of much of its landscape.

Beyond its classification and location, the specific details of the Annaghs site remain difficult to pin down from currently available sources, so the mound must sit for now as one quiet data point in a very long prehistoric story.