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Secrets of the Sky Tombs
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Five years after the earthquake and tsunami that triggered the unprecedented trio of...
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Drill down to discover how Earth's natural treasures provide bountiful energy to power...

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Gold, bronze, iron, steel... metals are pillars of our civilization, but what makes them...
NOVA  ·  Episode 4401

Secrets of the Sky Tombs


A team of daring scientists reveals ancient secrets of the first people to settle the forbidding Himalayas. Join them as they climb into mountain tombs that preserve evidence of strange rituals designed to ward off the restless spirits of the dead.

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