These accumulations, known as burnt mounds, are among the most common prehistoric monuments in Ireland, yet they remain oddly easy to overlook. Their purpose was almost certainly practical: stones would be heated in a hearth, then dropped into a trough filled with water, bringing it rapidly to the boil. The process left behind a distinctive debris of shattered, heat-stressed stone that built up over repeated use into the low mounds that survive today.

Excavation at Scratenagh uncovered not just the mound itself but the full working assembly beneath and around it, including the trough into which the heated stones were dropped, a hearth, a series of pits, and postholes suggesting some form of structure once stood nearby. The work was carried out by archaeologist Goorik Dehaene, and radiocarbon dating of material recovered from the site placed its use in the late Neolithic or early Bronze Age, a broad window spanning roughly the centuries around 2000 BC when farming communities were beginning to work copper and bronze alongside their older stone tools. The combination of features at Scratenagh gives a clearer picture than the mound alone would allow, mapping out what was essentially a outdoor cooking or processing station used, and reused, over an extended period.