The mound is modest by most measures, roughly four metres north to south and just under a metre high, covered in sod and packed with burnt material. What makes it worth pausing over is not its size but its type and its company: this is a fulacht fia, and it is not alone.

A fulacht fia is a prehistoric cooking site, typically Bronze Age, built around the principle of heating stones in a fire and dropping them into a water-filled trough until the water boils. The process leaves behind exactly what is visible here: a mound of fire-cracked, heat-shattered stone and charcoal, dark and dense beneath the grass. These sites are extraordinarily common across Ireland, numbering in the thousands, yet each one represents a repeated, deliberate act of communal use over what may have been generations. What sets Coornacaragh apart is the clustering. A second fulacht fia lies immediately to the south-west, and a burnt spread has been recorded on the opposite bank of the same stream. Three related sites gathered around a single watercourse suggests this was not an incidental stopping point but a location returned to, possibly over a long period, by people who knew exactly what the stream and the slope could offer them.