Pellucidar Series Collection, Edgar Rice Burroughs, (Includes AT THE EARTH’S CORE, PELLUCIDAR, TANAR OF PELLUCIDAR, TARZAN AT THE EARTH’S CORE, BACK TO THE STONE AGE, LAND OF TERROR, and SAVAGE PELLUCIDAR)

Five hundred miles beneath the earth's surface lay a world of eternal daylight, prehistoric beasts and primeval peoples - Pellucidar. David Innes and Abner Perry break through into this mysterious inner world. Their discovery and the ensuing struggle is a tale of conquest, deceit and wonder.