This one is notable for what does not. A standing stone that once stood on the south-western side of a ringfort in Barrahaurin, County Cork, has been removed entirely, leaving no visible trace on the ground. It is, in the most literal sense, an absence with a recorded past.

A ringfort, for those unfamiliar with the term, is a circular enclosure defined by earthen banks or stone walls, typically dating from the early medieval period and used as a farmstead or place of refuge. The Barrahaurin example had, at some point, a standing stone positioned along the line of its inner rampart. A researcher identified as Hartnett recorded the stone under its Irish name, "gallaun", a term used in Munster for a single upright stone, and noted its dimensions: 42 inches by 51 inches by 16 inches, placing it solidly in the category of a substantial upright slab rather than a modest marker. What makes the cartographic record quietly interesting is the stone's patchy appearance across the Ordnance Survey maps. It does not appear on the six-inch maps of 1842 or 1904, but does appear on the 1939 edition, which raises questions that the available evidence cannot fully answer. Whether it was present all along and simply unrecorded, or whether its appearance on the later map reflects a change on the ground, is not clear. By some point after that survey, it was gone.