"Out of Time's Abyss" is a science fiction novel by Edgar Rice Burroughs. The story is set in the mysterious landscape of Caprona, also known as Caspak, an isolated and prehistoric island where time has apparently stood still. The main character, Bradley, is captured by grotesque flying creatures, the Wieroo, who are the superior and magical species of the island. The narrative follows Bradley's escape attempt and his many thrilling and dangerous encounters with various prehistoric creatures and cultures. The novel is the third in the Caspak Trilogy, focusing on themes of survival, evolution and the cruel beauty of nature."Out of Time's Abyss" is a science fiction novel by Edgar Rice Burroughs. The story is set in the mysterious landscape of Caprona, also known as Caspak, an isolated and prehistoric island where time has apparently stood still. The main character, Bradley, is captured by grotesque flying creatures, the Wieroo, who are the superior and magical species of the island. The narrative follows Bradley's escape attempt and his many thrilling and dangerous encounters with various prehistoric creatures and cultures. The novel is the third in the Caspak Trilogy, focusing on themes of survival, evolution and the cruel beauty of nature.