

It rises from 2000 miles below the earth to melt everything in its path!
Army radiation experiments awaken a subterranean monster from a fissure that feeds on energy and proceeds to terrorise a remote Scottish village. An American research scientist at a nearby nuclear plant joins with a British investigator to discover why the victims were radioactively burned and why, shortly thereafter, a series of radiation-related incidents are occurring in an ever-growing straight line away from the fissure.
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Cast
- Dean JaggerDr. Adam Royston
- Leo McKernInspector McGill
- William LucasPeter Elliott
- Edward ChapmanJohn Elliott
- John HarveyMaj. Cartwright
- Michael RipperSgt. Harry Grimsdyke
- Anthony NewleyLCpl. 'Spider' Webb
- Ian MacNaughtonPvt. Haggis
- Peter HammondLt. Bannerman
- Kenneth CopePvt. Lansing
Crew
- Leslie NormanDirector
- Jimmy SangsterScreenplay
- Gerald GibbsDirector of Photography
- James BernardOriginal Music Composer
- James NeedsEditor
- Anthony HindsProducer
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