Ghosts of Machu Picchu

Season 37 Episode 4 | 52m 52s | Video has closed captioning.

Why did the Incas abandon their city in the clouds?

Aired: 02/01/10

Expired: 01/31/17

Rating: TV-PG

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Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Original funding provided by Exxon Mobil, Pacific Life, the David H. Koch Fund …

Funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting and PBS viewers. Original funding provided by Exxon Mobil, Pacific Life, the David H. Koch Fund for Science, HHMI, the Corporation for Public Broadcasting, and PBS Stations.

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