These features belong to a type of site known as a fulacht fia, a term used in Irish archaeology for prehistoric burnt mounds, typically found near water sources and associated with the heating of water by dropping fire-cracked stones into a trough.

The excavation, carried out under licence in advance of the landfill construction, revealed a burnt mound of heat-shattered stone, a trough that would once have held water, a hearth, and three post-holes suggesting some kind of timber structure once stood alongside. The radiocarbon date obtained from the site places it firmly in the Early Bronze Age, contemporary with monument-building cultures across Atlantic Europe. Fulachtaí fia are among the most numerous archaeological site types in Ireland, yet they remain quietly remarkable: each one represents a practical, repeated act of communal life, carried out in the same spot over what may have been generations, before the mound of discarded burnt stone grew large enough to mark the site for millennia.