It measures roughly seven metres across on its northeast to southwest axis, and were it not for what a plough turned up here around 1964, it might have passed indefinitely as a slight unevenness in the ground.

What the plough revealed was burnt material, the characteristic signature of a fulacht fia. These are among the most common prehistoric monuments in Ireland, typically Bronze Age cooking or processing sites where stones were heated in a fire and then dropped into a water-filled trough to bring it to the boil. The repeated heating and sudden cooling caused the stones to crack and crumble, and over centuries the discarded fragments accumulated into the horseshoe-shaped or irregular mounds that survive today. The one at Curraduff is not an isolated case: a second fulacht fia lies roughly 150 metres to the north-northeast, suggesting this stretch of landscape saw repeated, possibly seasonal, use over a long period. Such clustering is not unusual; fulachtaí fia are often found in low-lying, waterlogged ground where a reliable water source was close to hand, and their proximity to one another may reflect generations returning to a familiar place rather than any single episode of activity.