This is a fulacht fia, a type of prehistoric cooking site typically consisting of a mound of fire-cracked stones accumulated beside a trough or pit. The general method involved heating stones in a fire and dropping them into a water-filled trough to bring it to a boil, a process that left behind the distinctive scorched and shattered stone that archaeologists recognise across the Irish landscape.

What makes this particular site quietly notable is its proximity to another fulacht fia just fifty metres to the north. Whether the two were used simultaneously, or represent successive episodes of activity across different periods, is not recorded, but the clustering is a pattern seen elsewhere in Ireland and suggests that certain locations were returned to repeatedly. The burnt spread at Knockawaddra is the visible signature of that repeated heat and effort, preserved in the soil long after the people who gathered there had gone.