Thank God it's only a motion picture!

Dr. Steven Sorenson plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. This experiment causes a crack to form and grow within the Earth's crust, which threatens to split the earth in two if it is not stopped in time.

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Main Cast: Dana Andrews, Janette Scott, Kieron Moore, Alexander Knox, Peter Damon, Sydna Scott, Gary Lasdun, John Karlsen, Alfred Brown, Mike Steen

Director: Andrew Marton

Writers: Julian Zimet, Jon Manchip White

Editor: Derek Parsons

Cinematographer: Manuel Berenguer

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