At The Earth's Core Author:Edgar Rice Burroughs When David Innes and his inventor friend pierced the crust of the Earth in their new burrowing device, they broke out into a strange inner world of eternal day--a world back in the Stone Age, where prehistoric monsters still lived, and cave men and women battled against fierce inhuman masters. — The story of what these two men did in that new wor... more »ld of Pellucidar makes AT THE EARTH'S CORE one of Edgar Rice Burroughs' most outstanding bestsellers.« less