This one is notable for what does not. In rough pasture near the eastern bank of the Glanrastel River in Shinnagh, County Kerry, there is a recorded archaeological site where nothing can actually be seen. The monument in question was a gallaun, the Irish term for a standing stone, one of the thousands of upright stones erected across Ireland during prehistory, whose precise purposes remain debated but which served variously as boundary markers, memorial stones, or indicators of ritual significance. This particular gallaun has vanished entirely, leaving no visible trace on the ground.

What makes the absence here historically legible is a single cartographic record. The 1846 Ordnance Survey six-inch map, the great mid-nineteenth century project that systematically documented the Irish landscape in extraordinary detail, recorded a standing stone at this location and named it 'Gallaun'. That notation is now the only evidence the stone ever existed. At some point between the surveyor's visit in the 1840s and the present day, it disappeared, whether removed, buried, broken up for field clearance, or lost to the slow churn of agricultural land. The rough pasture by the river gives nothing away.