At Fornaght in County Cork, a standing stone once occupied a spot that the Ordnance Survey mapmakers of 1842 and 1903 either missed or found unremarkable enough to ignore. By 1938, however, it had been recorded on the six-inch OS map as a single standing stone, the kind of upright megalith, typically prehistoric in origin, that was erected across Ireland for purposes that remain only partially understood, whether as territorial markers, burial indicators, or astronomical alignments. Sometime after that survey, it was removed. There is now no visible surface trace.