Scattered through roughly ten metres square of ground are heat-shattered stones and soil darkened with charcoal, the quiet physical signature of a burnt mound, one of the most common yet least celebrated prehistoric monument types in Ireland.

Burnt mounds, known in Irish archaeology as fulachtaí fia, are typically interpreted as the remnants of ancient cooking or heating sites, though their precise function has been debated for decades. The working theory is straightforward enough: stones were heated in a fire and then dropped into a water-filled trough, bringing the water rapidly to a boil. Done repeatedly, this process gradually shattered the stones and built up a crescent-shaped mound of fire-cracked rock and dark, charcoal-rich earth, which is exactly what survives at Cashel More. These sites date most commonly to the Bronze Age, roughly 2000 to 500 BC, and they appear throughout Ireland in their thousands, usually on low-lying or sloped ground near a water source. The intermittent rather than continuous spread of material at this site suggests that what is visible on the surface may represent only part of a larger or more complex deposit below.