This one survives as a name on a map and a set of measurements recorded over a century ago. The standing stone at Longstone in County Cork is gone, leaving no visible surface trace, yet the place-name itself, Longstone, almost certainly preserves a memory of what once stood there. That kind of quiet persistence, a landscape feature outliving the object that gave it meaning, is not uncommon in Ireland, where townland names often carry the oldest available evidence of what people once considered worth marking.

The stone was described in 1916 by a researcher named Condon, who recorded it as a greyish, regularly shaped stone standing 78 inches high, 20 inches broad, and 4 inches thick, with a girth of 49 inches. Those proportions suggest a tall, relatively thin slab, the kind of upright megalith erected across Ireland and Britain from the Neolithic through the Bronze Age, though the exact date of any individual stone is rarely easy to establish without excavation. What is notable here is that the stone was already absent from both the 1842 and 1904 Ordnance Survey six-inch maps, meaning it had either not yet been recorded by those surveyors or had already been removed by that point. Condon's 1916 account may therefore be the only direct description ever committed to print. At some point after that, the stone was taken away entirely.