Fulachtaí fia typically appear as horseshoe-shaped mounds of burnt and shattered stone, the debris left behind after generations of fire-cracking rocks and plunging them into water-filled troughs to heat liquid or cook meat. They date mostly to the Bronze Age, and Ireland has thousands of them, making them one of the most common archaeological monuments in the country. What makes the Clashanaffrin example notable, in a quiet way, is precisely how thoroughly it has disappeared.

A 1943 Ordnance Survey six-inch map recorded a mound at this location, which is the only documentary evidence that anything ever broke the surface here. By the time the site was assessed for the archaeological inventory of Mid Cork, published in 1997, there was no visible surface trace remaining. The land had been reclaimed for pasture, a process of drainage, levelling, and reseeding that has erased countless similar monuments across the Irish countryside. The mound the mapmakers recorded in 1943 had gone, absorbed back into the agricultural landscape that now shows no sign of what lies beneath it.