It is, in a sense, a monument to its own disappearance, recorded in official cartography only briefly before vanishing from the landscape altogether. The stone does not appear on the Ordnance Survey six-inch maps of 1842 or 1904, which is curious in itself, since standing stones, those single upright slabs erected during prehistory for purposes that remain largely debated, were generally noted by the Victorian surveyors who combed the Irish countryside with considerable thoroughness.

By the time the 1940 Ordnance Survey map was produced, the stone had been absorbed into a field boundary running east to west across a south-facing slope of pasture land. This is not an uncommon fate for prehistoric monuments in agricultural Ireland. Farmers working the land across centuries often found standing stones useful as ready-made fence posts or boundary markers, incorporating ancient megaliths into dry-stone walls and field divisions without any particular sense of contradiction. At Cnoc Sathairn, this functional afterlife was at least enough to get the stone onto paper. Sometime after 1940, however, both the field fence and the stone were removed entirely, leaving no visible trace on the ground.