Somewhere beneath reclaimed pasture in north Cork lies, or rather lay, a fulacht fia, one of the enigmatic horseshoe-shaped mounds of burnt stone found in their thousands across the Irish landscape. These features, associated broadly with the Bronze Age, are thought to relate to the heating of water, possibly for cooking, bathing, or industrial processes, through the repeated use of fire-cracked stone. The mound at Knockmanagh no longer exists above ground, and the field shows no visible surface trace of what was once recorded there.

The site appears on the 1937 Ordnance Survey six-inch map, marked as a mound, which tells us it was still a physical presence in the landscape within living memory of the mid-twentieth century. Local information suggests that the mound of burnt material was levelled around 1967, most likely as part of agricultural improvement work, the kind of quiet erasure that happened across rural Ireland as land was drained, smoothed, and brought into more intensive use. The reclaimed pasture that covers the spot today gives no hint of what the cartographers recorded three decades before that levelling took place.