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Humanity has launched satellites into outer space and submarines to the ocean floor, but the ground below Earth's surface remains shrouded in mystery. Are there profound secrets buried beneath layers of rock, or hidden in vast caves? Can the subterranean world below shed light on humanity's past, or even its future?
- Released: Jan 01, 1970
- Runtime: 00:43:14 minutes
- Genre: Documentary
- Stars: William Shatner
- Network: History
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Se-6 Ep-1. The World Beneath Our Feet 2023-10-06
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Se-6 Ep-2. The Time Travelers 2023-10-13
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Se-6 Ep-3. Secrets of Ancient Structures 2023-10-20
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Se-6 Ep-4. Mysteries of the Vikings 2023-11-03
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Se-6 Ep-5. Strange Stories of the Presidents 2023-11-10
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Se-6 Ep-6. Bizarre Afflictions 2023-11-17
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Se-6 Ep-7. Strange Technology 2023-12-01
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Se-6 Ep-8. Unbreakable Codes 2023-12-08
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Se-6 Ep-9. Strange Stories of World War II 2023-12-15
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Se-6 Ep-10. Monsters Among Us 2023-12-22
