From pyramids and underground bunkers to watery graves and ancient astronauts, Willis examines the archaeological evidence and the traces left behind by more than 70 ancient civilizations, including Atlantis, the Underground Cities of the Grand Canyon, and many more.
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From pyramids and underground bunkers to watery graves and ancient astronauts, Willis examines the archaeological evidence and the traces left behind by more than 70 ancient civilizations, including Atlantis, the Underground Cities of the Grand Canyon, and many more.
Read Less