It measures roughly ten metres north to south and twelve metres east to west, an oval spread of burnt and fire-cracked material that has been slowly absorbing back into the farmland around it. What looks like a modest rise in the ground is in fact a fulacht fia, the accumulated debris of a Bronze Age cooking site, and the slight mound is all that now marks the spot where people once gathered to heat water, prepare food, or perhaps carry out other communal activities lost to the record.

Fulachtaí fia, sometimes called burnt mounds, are among the most commonly encountered prehistoric monuments in Ireland, yet they remain quietly mysterious. The typical form involves a trough, often timber-lined or cut into the ground, filled with water, which was then heated by dropping fire-heated stones into it. The cracked and spent stones were raked out and piled at the edges, which is exactly what gives these sites their distinctive horseshoe-shaped mounds of dark, charred material. The Glenarousk example sits within a broader landscape of such activity: a second fulacht fia lies approximately thirty-six metres to the north-west, suggesting this particular stretch of Cork countryside saw repeated or sustained use during prehistory, by communities whose other traces have largely vanished.