Fulachtaí fia are prehistoric cooking sites, typically consisting of a horseshoe-shaped mound of heat-shattered stone surrounding a trough, where water was boiled by dropping fire-heated rocks into it. They are found in their thousands across Ireland, usually in low-lying or marshy ground, and this one at Tullig fits that pattern of quiet, unassuming survival.

The site came to light in the early 1970s, not through any organised excavation, but during routine fence clearance by the landowner. What turned up was a concentration of burnt cinders and stones, the characteristic debris left behind when rocks are repeatedly heated and cracked in the process of cooking. When the site was visited again in 1985, the evidence was still readable in the ground: heat-shattered stone and a spread of dark, charcoal-rich soil that had been dispersed across a wider area, most likely through agricultural disturbance over the years. Adding an extra layer of interest to the location is the presence of a ringfort approximately twenty metres to the north-north-east. Ringforts, circular enclosures typically built in the early medieval period, were the farmsteads of their age, and while the fulacht fia may predate it considerably, the two features sitting in such close proximity on this gentle slope hints at a long continuity of human activity at this particular spot.