What looks at first glance like an unremarkable rise in the landscape is in fact a fulacht fia, a type of ancient cooking site found in their hundreds across Ireland, almost always in damp or waterlogged terrain. The mound itself is composed of burnt and fire-cracked stone, the accumulated debris of repeated use over what may have been centuries. This particular example measures roughly 13.4 metres long, 14.5 metres wide, and stands about 0.75 metres high, with a three-metre opening facing north.

The standard interpretation of fulachtaí fia is that they functioned as outdoor cooking places. A trough, typically dug into boggy ground and sometimes timber-lined to hold water, would be filled from a nearby source. Stones were heated in a fire and dropped into the trough until the water reached a temperature sufficient to cook meat. The shattered, heat-spent stones were then raked out and discarded, and over time those discard heaps built up into the distinctive horseshoe-shaped or oval mounds that survive today. The waterlogged setting was not incidental; proximity to a reliable water source was essential to the whole process. Some researchers have also proposed that these sites served other purposes, including bathing or textile processing, though cooking remains the most widely accepted explanation. The Loughane example, now overgrown, is a typical representative of this class of monument, its marshy surroundings unchanged in their fundamental character from the conditions that made the site useful in the first place.