- ? [as Frank Riddell]
- John Celardo
- John Celardo; Bob Lubbers?
- Kaänga; N'Tonga; Ann Mason; Lapin; Mrs. Latoure; Mr. Latoure
- Kaänga and Ann pursue a safari into the lands beyond the Voodoo Swamp, where they encounter animals that are extinct in the outside world. Here, the safari guide Lapin, is exploiting the Neanderthal natives and hiding his stolen treasures. Kaänga captures Lapin and takes him back to the Congo for trial.
- Bactrian camels; cavemen; dinosaurs; geysers; human sacrifice; idols; machine guns; mammoths; sabre-toothed tigers; saddle warthogs; shields; the Voodoo Swamps; tyrannosaurs; volcanos
The story title is taken from the cover blurb.
first line: "Well did Kaänga, lord of the jungle, know the dangers lurking in the 'Land Beyond the Voodoo Mists.'"