Ancient Underground Tunnels 2020 Documentary Subterranean Worlds Span The Entire Earth

Premiered Nov 8, 2020

An ancient tunnel system may have spanned the entire Earth, from continent to continent. Seems hard to believe at first but there are many legends and tales of subterranean worlds scattered throughout old texts. There are also fascinating caves and cities that have been discovered under our feet, but no one seems to know who built them or for what purpose. Some people an advanced civilization built them in a time before recorded history. Could they be right?



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