It measures roughly three and a half metres at its longest and just under half a metre in height, modest dimensions that belie what lies beneath: a dense accumulation of heat-shattered stones and charcoal-darkened soil, the unmistakable signature of prehistoric cooking activity.

This is a burnt mound, the remains of what archaeologists working in Ireland call a fulacht fia, a type of site found in remarkable numbers across the Irish landscape, particularly from the Bronze Age onwards. The basic technology was straightforward: stones were heated in a fire, then dropped into a water-filled trough to bring the water to a boil, cooking meat or perhaps serving other purposes such as textile processing or bathing. The repeated fracturing of stones through thermal shock, and the gradual accumulation of those discarded fragments alongside ash and charcoal, produced the characteristic mound form. The Barrees example is grass-covered now, with its internal material only visible where erosion has exposed the eastern edge. Notably, a second fulacht fia lies just eleven metres to the south-east, suggesting this stretch of north-facing riverine slope was a place people returned to, over time, for whatever purpose these structures served.