In the exposed banks, heat-shattered stones and charcoal-darkened soil tell the story plainly enough: this is a burnt mound, the remains of a prehistoric cooking or heating site where stones were repeatedly fired and plunged into water until they cracked apart and were discarded in a spreading heap. Measuring roughly eight metres northwest to southeast and seven metres northeast to southwest, the mound sits prominently among rushes and moor grass, a low but distinct rise in otherwise rough grazing land.

Burnt mounds of this kind are among the most common prehistoric monuments in Ireland, yet they remain genuinely puzzling. The usual interpretation is that they functioned as outdoor cooking sites, with a trough of water brought to the boil using fire-heated stones, though scholars have also proposed uses ranging from bathing and textile processing to brewing. The closely related term fulacht fia, sometimes used interchangeably, refers specifically to the cooking-pit tradition associated with these mounds in early Irish literature. What makes Kealagowlane particularly striking is not this mound alone but its immediate surroundings. A second burnt mound lies roughly ten metres to the south-southeast, and a fulacht fia sits about thirty metres to the southwest. A cairn, a mound of stones that in Irish prehistoric contexts often marks a burial, lies approximately sixty metres to the east. A stone circle sits around ninety metres to the south-southeast. The clustering of so many monument types within a compact area of upland bog suggests this was a place that saw sustained, perhaps ceremonially significant, use across prehistoric times.