Chapter Seven, "At the Earth's Core," by Edgar Rice Burroughs, an audiobook post. www.johnpirillo.com
The fascination with the theory of the Earth being hollow hasn't stopped to this day. Did you know that the Nazis spent millions of dollars, the equivalent of billions in today's monies, in pursuit of entrances to the Hollow Earth?
They actually established bases at the poles to explore and hopefully find the entrances.
Admiral Byrd was sent with thousands of men and weapons to do the same.
Did the two governments know something they aren't telling us today?