To the casual eye it reads as unremarkable terrain, but the material beneath the turf is burnt stone and charred earth, the accumulated debris of prehistoric cooking. This is a fulacht fia, a type of site found in enormous numbers across Ireland and dating typically to the Bronze Age. The standard interpretation is that such sites served as outdoor cooking places: a trough dug into the ground would be filled with water, stones heated in a fire nearby would be dropped in to bring it to the boil, and meat could then be slow-cooked. The burnt, heat-shattered stones were raked aside after use, gradually building up the characteristic horseshoe-shaped mound that survives at so many of these sites.

What makes the Lackaneen example quietly interesting is not its solitude but its company. A second fulacht fia sits roughly thirty metres to the west, and together these two form part of a cluster of four such monuments recorded on what was, in the early twentieth century, Mr O'Flynn's land. The cluster was noted by Bowman in 1934, suggesting that this stretch of streamside ground was a focus of repeated activity at some point in prehistory. Proximity to a reliable water source was essential for the cooking process, which explains why fulachta fiadh so consistently appear along stream banks and beside marshy ground. Finding four within close range of one another hints at either sustained use over time or the gathering of a significant number of people at this spot.