Mining engineer Frank Comstock takes a job checking out the integrity of a shut-down mine in Nevada. He gets his answer when the mine caves in, plunging him far underground into a network of tunnels occupied by two warring races of unknown chalk-skinned humans! Frank finds himself in a world of trouble as he gets caught in a battle, captured by one side, taken under the protection of a curious professor, and integrated into this strange society. Frank finds Wu a bizarre place. Diplomats invent reasons to continue a pointless war, just to protect the jobs and dividends of arms producers. Prosperity is measured in the amount of excess production they need to destroy. Workers and owners regularly clash, and neither side comes out ahead. Plus, there are DIFFERENCES from the land he's left behind! Stanton A. Coblentz's Swiftian satire returns to print for the first time since 1975, along with illustrations by Frank R. Paul from the original 1935 serial in WONDER STORIES, and by Virgil Finlay from the 1950 FANTASTIC STORY reprint. This is the first in the Thrilling Wonder Stories Vintage series, reviving the great serials, story cycles, and recurring characters that brought readers back issue after issue for the latest installments from 1929 to 1955.