I bet a bunch of Africans during the ice age thought that there was no arable land under the glaciers in Britain. But when the ice melted, boy did they look silly.
Madness string 82344
Three thousand kilometers, 20 meters, 11 decimeters, 4 centimeters, 25 millimeters, 72 micrometers, 59 nanometers, 2 picometers, 42 femptometers, 0.17 attometers, 97 zeptometers, and 1 yoctometer.