In Caverns Below

This edition has images. Title: In Caverns Below Series Title: Produced from Wonder Stories March, April, May 1935 Note: Wikipedia page about this book: https://en.wikipedia.org/wiki/Hidden_World_(novel) Note: Later edition published with title: Hidden World. Credits: Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net Summary: "In Caverns Below" by Stanton A. Coblentz is a satiric science fiction novel originally published as a magazine serial...