The ringfort at Laharan, on the northern slope of Bailocke Mountain in County Cork, survives only as a memory mapped onto paper. Where there was once a rath, the Irish term for a roughly circular earthen enclosure used in early medieval times as a farmstead or defended residence, there is now level pasture with no surface trace whatsoever. Its existence is known primarily because surveyors captured it on the Ordnance Survey six-inch map of 1842, recording a hachured circle of roughly thirty metres in diameter. By the time anyone thought to look closely, it was already gone.

The question of precisely which fort once stood here is unresolved. A researcher named Bowman, writing in 1934, noted a levelled single-ramparted fort of approximately thirty-four yards in diameter on land belonging to a Mr Bolster. A separate account mentions a levelled fort on land held by a J. Scanlon, of which, in the words of the record, no sign remains. Whether these are the same site or two distinct losses is unclear, and the ambiguity itself tells a quiet story about how thoroughly such earthworks could disappear from the landscape within a generation or two of agricultural improvement. What is certain is that a circular enclosure does survive roughly one hundred and fifty metres to the east, in an adjoining field, offering at least a physical sense of what the Laharan rath might once have looked like before the land was levelled.