'A despondent young man, buried alive after imbibing snake venom to test an antidote he'd invented, breaks out into a subterranean kingdom, inhabited by prehistoric creatures and anthropoids who are both Latin-speaking and phosphorescent! The queen of the anthropoids, who has a good figure but the head of an ape, takes a fancy to the hero and plans to use him as breeding stock to boost the gene pool of her tribe. Rather than submit, the hero kills the queen (with a poisonous snake) and is then speedily returned to Australia after a fortuitous volcanic eruption.'
Source: University of Melbourne Library. Special Collections.