Directed by: Norman J. LeBlanc

Written by: Claude Landry

Storyboard by: Jean-Charles Finck

Main characters:

Bob Morane
Bill Ballantine
Professor Aristide Clairembart
Julie Friday
President of the USA
Miss Ylang-Ylang
Roman Orgonetz
Pepitone

Synopsis:

The vapours emitted by Mount Riskamook as it errupts have hallucinogenic properties. Whoever inhales them, sees prehistoric animals! Driven by curiosity, Bob decides to visit the strange mountain.

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