But the blackened, fire-cracked material beneath the turf marks this out as a fulacht fia, one of the most common yet quietly puzzling monument types in the Irish landscape. Fulachtaí fia are prehistoric cooking sites, typically Bronze Age, where stones were heated in a fire and then dropped into a water-filled trough to bring it to a boil. The process left behind characteristic spreads of shattered, heat-fractured stone, often shaped into a horseshoe or kidney-shaped mound around the trough. Their consistent positioning near water, as here, is no accident; proximity to a stream was fundamental to how they worked.

What makes the site at Gooseberryhill particularly interesting is that it does not stand alone. It belongs to a cluster of six such monuments in the same area, a concentration that suggests sustained, possibly repeated use of this particular stretch of ground over generations. The Gooseberryhill mound was recorded on the Ordnance Survey six-inch map of 1936, by which point it had long since been absorbed into the agricultural landscape as an unremarkable rise in a field. The clustering of fulachtaí fiadh in close proximity is not unheard of across Ireland, and while the reasons remain debated, some archaeologists have suggested that favoured spots near reliable water sources were returned to over long periods, or that the monuments reflect communal activity of some scale rather than isolated, one-off events.