In the wilds of the Trans-Himalayan region, a quartet of adventurers led by Dr. Walter T. Goodwin stumbles upon a tribe of human primitives forgotten since the age of Alexander the Great, and an awesome being of living metal commanded by the exiled Norhala....

Set on the island of Ponape, full of ruins from ancient civilizations, the novel chronicles the adventures of a party of explorers who discover a previously unknown underground world full of strange peoples and super-scientific wonders. From the depths...