It is a fulacht fia, a type of site found in enormous numbers across Ireland, typically interpreted as an outdoor cooking place used during the Bronze Age. The usual method involved heating stones in a fire, dropping them into a water-filled trough to bring it to the boil, and then using that trough to cook meat. The burnt and shattered stones, discarded after use, accumulated into a mound over generations of repeated activity. At Flemingstown, that accumulation produced a circular spread of scorched material that remained intact in farmland for millennia.

When the surrounding land was drained in the 1950s, local memory holds that oak beams were uncovered in the process. This detail is tantalising, since wooden troughs are precisely what archaeologists associate with fulachta fiadh; timber would rarely survive without waterlogged or anaerobic conditions of the kind that land drainage tends to disturb and eventually destroy. Whatever the beams represented, their removal during drainage work was almost certainly the beginning of the end for much of the physical evidence. The mound itself was subsequently levelled, reducing a once-prominent earthwork to a low, grassy spread. Local knowledge also points to two further concentrations of burnt material in the same field, one to the west and another to the south-west, though neither could be precisely located when the site was assessed. The clustering of multiple spreads in a single field is not unusual for this type of monument and may indicate repeated use of a favoured location over a long period, or simply that a convenient water source nearby, the stream lying roughly 160 metres to the west, drew people back to the same ground across successive generations.