A fulacht fia is a Bronze Age cooking site, typically identified by a horseshoe-shaped mound of fire-cracked stone left behind after repeated cycles of heating stones and plunging them into a water-filled trough to boil or steam food. The horseshoe shape is distinctive enough that it usually survives millennia of farming and weather without losing its outline entirely. At Aghaneenagh, however, that shape is gone.

The mound here was levelled around 1974, according to local information, reducing what had been a recognisable earthwork to a low, grassy scatter of burnt stone sitting in wet ground. Before that happened, the site had been noted in 1934 by Bowman, who recorded it on land belonging to T. O'Leary. That early documentation preserved at least the basic facts of what existed, even as the physical monument itself was later lost to agricultural clearance. The waterlogged conditions of the surrounding pasture are in keeping with where these sites tend to appear; proximity to boggy or marshy ground was practical for Bronze Age communities who needed a reliable water source to fill the cooking trough.

What remains today is subtle to the point of near-invisibility, a faint discolouration and spread of heat-shattered stone lying flat in damp field ground rather than rising into the pronounced mound shape that makes other fulachta fia so immediately legible in the landscape.