 Altberg, alone at last, drifts for a couple more days before his U-boat finally lands on the ocean floor, where he is amazed to see the sunken remains of an ancient and elaborate city, deciding that it is the ruins of Atlantis.Overcome with excitement, Altberg dons a deep-sea diving suit, exploring the breathtaking, indescribable beauty of the ruined city and discovering a mysterious rock-hewn temple, amazed to find the image of the ivory carving within.He spends the next couple of days in darkness as the sub's last reserves of battery power and air are expended.