Best of the Hollow Earth Hassle Author:Mary Jane Martin, Tim Swartz DOES A VAST UNKNOWN AREA EXIST INSIDE THE EARTH? . . . ARE THEIR ENTRANCES AT THE NORTH AND SOUTH POLE? . . . ARE WORLD GOVERNMENTS KEEPING THIS A CLOSELY GUARDED SECRET? . . . IS THIS WORLD INHABITED, AND ARE THE DWELLERS INSIDE THE EARTH GOOD OR EVIL?" There are two sets of "unorthodox" beliefs about the interior of our planet -- t... more »he theory that the earth may be "hollow" and possibly inhabited (by a race of giants?), and the second that a system of caverns exists beneath our feet that are controlled by both good and evil entities (thus the concept of a hell down below).« less