Does a vast unknown area exist inside the earth? Are there 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 - the theory that the earth may be "hollow" and possibly inhabited, 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).

For over 10 years the author put out a widely...