Tarzan at the Earth's Core by Edgar Rice Burroughs

The lake of the Horibs lies at a considerable distance from the eastern end of the mountains of the Thipdars, perhaps five hundred miles, and where there is no time and distances are measured by food and sleep it makes little difference whether places are separated by five miles or five hundred. The time has come to read the thirteenth Tarzan book and the fourth Pellucidar book, Tarzan at the…