Lost rocks or stones?

The nomenclatural vicissitudes brought about by the removal of the German population after the Second World War are quite well documented by the fairly well-known location of the Lost Stones on the Great Ridge of Hrubé Jeseník.
For a long time, we had an older gentleman from Brníček (the one near Lesnice) at the markers, who always told us that the Lost Stones are no Lost Stones. We should properly call them Rožec or Roh (or Rohová...