The space ships were miracles of power and precision; the men who manned them, rich in endurance and courage. Every detail had been checked and double checked; every detail except--
A daring adventure with huge dollops of geographical, technological, and scientific information, touches of humor, and a slow build-up followed by one exciting incident after another.
How could this man awaken with no past--no childhood--no recollection except of a vague world of terror from which his mother cried out for vengeance and the slaughter of his own people stood as a monument of infamy?
A room in San Francisco where strange things happened -- or a doorway into another cosmos, a different world, or perhaps the key to the past or future?
David Innes, a man with a remarkable story to tell, is a mining heir who finances an experimental "iron mole," an excavating vehicle designed by his elderly inventor friend Abner Perry. In a test, they discover the vehicle cannot be turned. It burrows 500 miles into the Earth, emerging into the unknown interior world of Pellucidar.