It is the kind of feature that could easily be overlooked by anyone who did not know what they were looking at, yet it represents one of the most widespread and intriguing categories of ancient monument found across Ireland.

A fulacht fia, sometimes called a burnt mound, is generally understood to be a prehistoric cooking site, though other uses such as bathing or textile processing have been proposed. The typical arrangement involved heating stones in a fire and then dropping them into a water-filled trough, bringing the water to a boil. The stones, fractured by the repeated thermal shock, were discarded into a mound nearby, and it is these spreads of shattered, fire-reddened material that survive in the landscape today. The Knockmore example, a roughly circular deposit of burnt stone, sits close to a stream, which would have provided the necessary water supply. What makes this particular spot quietly striking is that it does not stand alone. Two further fulachta fiadh have been recorded in the same field, suggesting that this stretch of ground beside the water was returned to, perhaps over generations, for whatever purpose these monuments served.