This is early sword and sorcery, akin to Edgar Rice Burroughs John Carter of Mars series. Good fun for fans of classic fantasy.
From back cover: Jandar the Alien clawed from his airship by the cannibalistic Zarkoon bird-men while leading his aerial armada to an attack on the hidden city of Kuur, devises a daring escape into the land beyond the world's edge. But in this unknown terrain, with only a nubile jungle maid as a guide, he is no longer the hunter but the hunted...prey for the giant fang-snouted groack...game for the ferocious six-legged othodes...and stalked by a fate far worse than death which forces him to renounce all hope of rescue---the merciless vengeance of the fiendish Mind Wizards of Callisto...
From back cover: Jandar the Alien clawed from his airship by the cannibalistic Zarkoon bird-men while leading his aerial armada to an attack on the hidden city of Kuur, devises a daring escape into the land beyond the world's edge. But in this unknown terrain, with only a nubile jungle maid as a guide, he is no longer the hunter but the hunted...prey for the giant fang-snouted groack...game for the ferocious six-legged othodes...and stalked by a fate far worse than death which forces him to renounce all hope of rescue---the merciless vengeance of the fiendish Mind Wizards of Callisto...
5th and Last book in this series, an adventure series that set the standard for many years... If you love Tarzan you will love this series.