A deposit of very black earth and shatter stone, the kind of scorched, fire-cracked debris that accumulates over centuries of repeated heating, was observed folded into the boundary material, suggesting that a fulacht fia once stood on or near this spot.

A fulacht fia is a type of prehistoric cooking site, typically consisting of a trough, a hearth, and a mound of heat-shattered stone. The stones would be heated in a fire and then dropped into a water-filled pit to bring it to the boil, leaving behind the characteristic blackened, fragmented debris that archaeologists still recognise today across Ireland. At Nohaval, the evidence was identified by O'Hare in 2000, who was originally examining the field boundary for a different reason altogether: its possible connection to the enclosure of a nearby church site. The surrounding land is level and supports wet pasture, conditions consistent with the low-lying, often waterlogged ground where fulachta fia are most commonly found. The site appears to have been absorbed into the boundary over time, its remains incorporated rather than preserved in isolation.