Season 15 Episodes4
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The Tigris Expedition: In Search of Our Beginnings
Apr 1, 1979
Follows explorer Thor Heyerdahl's crew as they sail their reed boat over routes believed to have been followed by Sumerian traders 5000 years ago.
Seasons45
Episode Summary
"The Tigris Expedition: In Search of Our Beginnings" is episode 4 of National Geographic Specials season 15. It aired on April 1, 1979.