Upon arrival to Venus, cosmonauts find furious volcanoes and sundry prehistoric beasts in Klushantev's film, based on a novel by the Soviet sci-fi writer Aleksandr Kazantsev. Footage has been recycled in three Corman productions: Voyage to the Prehistoric Planet, Queen of Blood, and Voyage to the Planet of Prehistoric Women (the directorial debut of Peter Bogdanovich).83min