Explorer Thor Heyerdahl and his ten-man crew sailed their reed boat, the Tigris, over routes he believes were followed by Sumerian traders 5,000 years ago. The film goes beyond science to focus on the man, Heyerdahl, in an effort to explain what motivates him to risk his life in the search for knowledge.
Thor Heyerdahl
as Himself
Carlo Mauri
as Himself
Norman Baker
as Himself
Norris Brock
as Himself
Hans Peter Böhn
as Himself
Germán Carrasco
as Himself
Asbjorn Damhus
as Himself
Rashad Nazir Salim
as Himself
Yuri Senkevich
as Self
Toru Suzuki
as Himself
Detlef Zoltzek
as Himself
