No stone, no stump, no shadow in the grass. It is the kind of entry that quietly raises more questions than it answers, a monument that was catalogued and then erased within a generation of being formally recognised.

The stone appears on the Ordnance Survey six-inch map of 1937, marked as a single standing stone on an east-facing slope that was under tillage at the time. What makes its history particularly curious is that it was absent from the equivalent OS maps of 1842 and 1904, which means either the surveyors of those earlier editions overlooked it, or it was not yet visible or noteworthy enough to record. Standing stones are among the most enduring prehistoric monument types in Ireland, typically large upright slabs of local stone set into the ground during the Bronze Age, and they tend to survive precisely because their size makes removal awkward and expensive. At Knocknabehy, that was evidently not enough. Around 1971, the stone was taken out, most likely during agricultural clearance, and the site now shows no visible surface trace.