In this episode, I review the age old theory of the Hollow Earth and the legendary city of Agartha said to reside in the center of the Earth.
If you're interested in this theory, you can check out the following books for further information:
The Smoky God, by Willis George Emerson
The Coming Race, by Edward Bulwer-Lytton
The Cellular Cosmogony, or The Earth, A Concave Sphere, by Cyrus Read Teed
A Journey to the Earth's Interior, or Have the Poles Really Been Discovered? by Marshall Gardner
