AMBASSADOR: What happens when the crack reaches all the way around the world?
RAMPION: At that time, the oceans will be sucked in. The colossal pressure generated by the steam will produce a tremendous explosion, ripping the Earth in half.
AMBASSADOR: So it will mean the end of the world?
RAMPION: As we know it, yes.

Jon Manchip White (1924-2013) Welsh-American writer
Crack in the World (1965)

(with Julian Zimet)