In this sequel to At the Earth's Core, David Innes vows revenge and returns to the Inner World of Pellucidar to rescue the beautiful Dian, who had been torn from his arms by trickery. However, his return trip places him far from the land of his beloved and he is forced to undertake a desperate journey thousands of miles across the fierce inner earth to reach her. David's epic voyage takes him through the many strange lands of Pellucidar, including the pendant moon and Land of Awful Shadow. His heart pounding encounters with primeval beasts and extraordinary peoples makes Pellucidar one of the best adventure stories ever penned by Edgar Rice Burroughs.
The Arabs, of whom I wrote you at the end of my last letter (Innes began), and whom I thought to be enemies intent only upon murdering me, proved to be exceedingly friendly—they were searching for the very band of marauders that had threatened my existence. The huge rhamphorhynchus–like reptile that I had brought back with me from the inner world—the ugly Mahar that Hooja the Sly One had substituted for my dear Dian at the moment of my departure—filled them with wonder and with awe. Nor less so did the mighty subterranean prospector which had carried me to Pellucidar and back again, and which lay out in the desert about two miles from my camp. With their help I managed to get the unwieldy tons of its great bulk into a vertical position—the nose deep in a hole we had dug in the sand and the rest of it supported by the trunks of date–palms cut for the purpose.