This is not unusual in Irish landscapes, where millennia of farming and land division have a habit of swallowing older features, but it makes the archaeology here particularly easy to miss. A fulacht fia is a type of prehistoric cooking or industrial site, typically identified by a mound of fire-cracked stone, charcoal, and burnt earth left behind after repeated use of a trough and heated stones, probably for boiling water. They are found in enormous numbers across Ireland, often close to water, and date mainly to the Bronze Age.

What adds a layer of interest to this particular example is its proximity to a rath known locally as Monearmore Fort, which sits approximately twenty-five metres to the north-east. A rath is a circular earthwork enclosure, generally associated with early medieval settlement and farming, though the name is sometimes applied loosely to older features in the landscape. The closeness of the two sites does not necessarily mean they were contemporary or connected, but it does suggest that this corner of Killeagh has attracted human activity across a considerable stretch of time. The burnt material folded into the field boundary hints that the fulacht fia was already being dismantled or repurposed long before anyone thought to record it formally.