A standing stone at Knockroe in County Cork made its sole cartographic appearance on the 1938 Ordnance Survey six-inch map, having been absent from both the 1842 and 1904 editions of the same series. Whether it was simply missed by earlier surveyors, or had been re-erected or repositioned in the intervening decades, is not clear. What is certain is that by around 1984 it was gone, removed from the south-facing slope of reclaimed pasture where it had stood.

Standing stones are among the most enigmatic monuments in the Irish landscape, erected across a broad prehistoric span and serving purposes that remain genuinely uncertain, from territorial markers and commemorative stones to elements of ritual or astronomical alignment. The Knockroe stone sat to the south of a second standing stone that still survives in the area, suggesting the two may once have formed a related pair or a loose alignment. Its location on reclaimed pasture on a southerly slope places it in a type of agricultural landscape that has been steadily reshaped over centuries, which may partly explain both its obscurity and its eventual loss. The removal around 1984 was not unusual for the period; many such stones were cleared from fields during land improvement works, their significance either unrecognised or considered secondary to practical concerns.