Tarzan the Terrible by Edgar Rice Burroughs, Fiction, Literary, Action & Adventure

Following the shocking discovery of his wife's fate, Tarzan embarks on a relentless quest to rescue Jane, who has been kidnapped rather than killed. His journey leads him to the hidden valley of Pal-ul-don, inhabited by both dinosaurs and peculiar humanoids, including the white-skinned Ho-don warrior Ta-den and the hairy Waz-don chief O-mat. Captured by these tribes, Tarzan earns the title "Tarzan-Jad-Guru" through his impressive prowess. Meanwhile, another mysterious figure arrives in Pal-ul-don, complicating his mission to save Jane.