The Greatest Vertical Drop on Earth
Mount Thor is the purely Greatest vertical drop. It is located in Auyuittuq National Park, Baffin Island, Nunavut, Canada. It’s height is 1250 meters or 4100 ft. Though summit elevation is much more which is 1675 meters.

Greatest nearly vertical drop
Trango Towers, Pakistan is 2nd highest vertical drop in earth.
It’s height is almost 1340 meters but astonishingly it’s summit height is 6286 meters.

Photos of Mount Thor and Trango Towers