{webspace.utexas.edu/cokerwr/www/slides/anacatlan/symmes.html}

It’s highly, highly unlikely that an advanced people live in the center of the Earth, that there are multiple entrances to the center, and that the Northern Lights are caused by gases escaping from the area. Still, spend a few minutes looking at the image above. It’s pretty intriguing even though no physical evidence can back it up. My favorite theory related to the Hollow Earth is that the Snake People altered the Earth’s axis in order to turn Rainbow City (located in Antarctica) from tropical paradise to frozen desert. Learn more about the phenomenon at the Wikipedia page.