It measures thirteen metres long, just over ten metres wide, and barely thirty centimetres high, and to the passing eye it could easily read as nothing more than a slight swelling in the field. In fact it is a fulacht fia, a type of prehistoric cooking or processing site found widely across Ireland, typically consisting of a horseshoe-shaped mound of burnt and shattered stone discarded from repeated heating. The stones would have been fired and dropped into a water-filled trough to bring it rapidly to a boil, a method that left behind the distinctive scorched and cracked material that forms these mounds.

What makes this particular site quietly interesting is not the mound alone but its company. Roughly ninety metres to the north-north-east lies a second fulacht fia, the two sites sitting close enough together to suggest deliberate, perhaps repeated activity in this part of the landscape over a long period. Fulachtaí fia are generally dated to the Bronze Age, broadly speaking the second millennium BC, though some sites in Ireland have produced dates ranging well outside that span. Whether the two Curragh examples were used simultaneously or represent separate episodes of activity separated by generations is unknown, but their proximity is unusual enough to notice.