It is, in fact, the remains of a fulacht fia, a type of prehistoric cooking site found in considerable numbers across Ireland, typically dating from the Bronze Age. The characteristic dark spread of fire-cracked stone marks the place where, over repeated use, heated rocks were dropped into a water-filled trough to bring it to a boil, cooking meat or serving other purposes that archaeologists still debate. The mound itself is the accumulated waste of those stones, cracked and discarded after each heating.

This particular example measures roughly six metres north to south and four and a half metres east to west, a modest but reasonably intact spread of burnt material. Its location follows a pattern well established among fulachta fiadh across the island: close to a water source, in this case a stream running to the south of the site. That proximity was not incidental. A reliable supply of water was fundamental to the whole process, and the clustering of these sites along stream banks and boggy ground is one of the reasons so many have survived, preserved beneath waterlogged or reclaimed land that was never deeply ploughed.