It measures about twelve metres east to west, eight metres north to south, and barely half a metre high, with what appears to be an opening facing north. On its own, it would be easy to dismiss as a natural feature of the landscape. What makes it more interesting is that it is not alone: two further mounds of the same type lie close by, forming a small cluster of prehistoric cooking sites in the same stretch of ground.

This type of monument is known as a fulacht fia, a term used in early Irish literature, though the structures themselves are broadly Bronze Age in origin, dating roughly from 1500 to 500 BC. The typical arrangement involved a trough dug into the ground near a water source, a fire used to heat stones, and those stones dropped into the water to bring it to a boil. The shattered, fire-cracked stones were then raked aside, and over time these discards accumulated into the distinctive horseshoe or kidney-shaped mounds that survive across the Irish countryside. They are among the most common prehistoric monument types in Ireland, found in their thousands, and they tend to cluster near streams and boggy ground exactly as this group does. Whether they were used primarily for cooking, textile processing, bathing, or some combination of purposes is a question that archaeologists have debated at length without reaching a firm conclusion. The grouping of three examples in Urraghilmore is a reminder that these were not isolated, one-off events but places where people returned, or where different communities made use of the same favourable location across generations.