It is the remains of a fulacht fia, a type of prehistoric cooking site found in considerable numbers across Ireland, typically in low-lying, waterlogged ground close to a water source. The location at Poularick fits the pattern almost perfectly: marshy terrain, a stream nearby, and the characteristic raised mound formed over centuries from the accumulation of fire-cracked stones discarded after use.

A fulacht fia works on a deceptively simple principle. Stones are heated in a fire, then dropped into a water-filled trough, usually timber-lined, to bring the water rapidly to a boil. Food, most likely meat, would then be cooked in the heated water. The cracked and spent stones, shattered by the repeated thermal stress of fire and cold water, are tossed aside, and over time these discards build up into the horseshoe-shaped mound that archaeologists recognise today. Such sites date broadly to the Bronze Age, though some were in use earlier or later, and they are among the most commonly recorded prehistoric monuments in Ireland. The example at Poularick was, at some point before its significance could be fully assessed, partially levelled, with local information placing this event at around 1980. What remains sits in ground that is, by all accounts, inaccessible.

The combination of waterlogged terrain and partial destruction means little can now be seen or reached. The site endures more as a coordinate in the archaeological record than as anything a curious visitor could meaningfully encounter.