Secrets of the Sky Tombs

Passport Season 44 Episode 1 | 53m 32s

The towering Himalayas were among the last places on Earth that humanity settled. Scaling sheer cliff sides, a team of daring scientists hunts for clues to how ancient people found their way into this forbidding landscape and adapted to survive the high altitude. They discover rock-cut tombs filled with human bones and enigmatic artifacts, including gold masks and Chinese silk.

Aired: 10/31/18

Expires: 01/03/20

Rating: TV-G

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