DocumentaryOverview
The Hollow Earth Theory is represented in the history of many diverse cultures throughout the world. Avalon of Camelot, Garden of Eden, Paradise Lost, Shangri-La, and Valhalla are names assigned to a mystical and physical place thought by some to house prehistoric animals and plants. This program is a compilation of extensive research into the history of man’s attempt to solve this riddle.
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Availability for the US. Data from JustWatch.