Pellucidar

When David limes returned from the outer world to Pellucidar, the land "At the Earth's Core," he brought with him such implements as might aid him to establish the Empire of which he dreamed. But David and his friend Perry were dealt unexpectedly heavy blows that set back their scheme to bring civilization to the Stone Age land. For Hooja the Sly One was quick to turn David's advantages against him, dealing the cruelest blow by the abduction of Dian the Beautiful One. In a land of savagery and eternal sunlight, Dayid and Perry live an adventure that only the inspired pen of Edgar Rice Burroughs, author of Tarzan novels, could write.