Near Barrahaurin in County Cork, a small oval feature, measuring roughly thirteen metres north to south and sixteen metres east to west, appeared on the first edition Ordnance Survey six-inch map, the great mid-nineteenth-century cartographic undertaking that documented Ireland's townlands, field boundaries, and surface features in remarkable detail. It was marked as a quarry. By the time later editions of the same maps were produced, it had vanished from the cartographic record entirely.

The feature was logged in 1988 as a potential site of archaeological interest, noted on the basis of its appearance on that early map alone. A decade later it was re-examined and classified simply as a quarry. Surveyors ultimately concluded that the available evidence was not sufficient to confirm it as an archaeological monument. It occupies a curious category that fieldwork occasionally throws up: a place noticed, recorded, queried, and then quietly set aside. Whether the feature was ever anything more than a small working quarry, and why it disappeared from subsequent mapping, remains unanswered.