This is a fulacht fia, a type of monument found in considerable numbers across Ireland and generally interpreted as a Bronze Age cooking site. The typical arrangement involved a trough dug into the ground, filled with water, and heated by dropping fire-cracked stones into it; those shattered, blackened stones were then raked out and piled to the sides, building up over time into the distinctive crescent-shaped mounds that survive today. The one at Glanycummane measures roughly 16.8 metres along its longer axis and stands about half a metre high, with an opening of 3.5 metres facing south-west.

What makes the site more than a solitary curiosity is its company. It belongs to a cluster of five fulachta fiadh in the immediate area, a grouping that suggests repeated, perhaps sustained, use of this particular patch of landscape over time, possibly because of a reliable water source nearby, which such sites almost invariably required. The north-east edge of the mound has been cut by a cattle track, a small but telling detail: the monument has been quietly absorbing the pressures of agricultural life for generations without anyone necessarily registering what it is. The broader area of north Cork is well documented for this type of monument, and their concentration in low-lying or waterlogged ground is consistent with what archaeologists observe across the island.