i happen to borrow this movie from a friend know nothing about it and and it turn out to be an outstanding documentary about a journey on an ancient vessel across vast expanse of the ocean . thor heyerdahl have develop a theory that the ancient inca in peru manage to travel thousand of mile across the ocean to polynesia and base on certain relic that be find in both place and certain type of ancient sea go vessel that we know they have available and analysis of ocean and wind current and and the knowledge that the inca do and in fact and travel in some undetermined amount at sea . in order to test his hypothesis and heyerdahl and his crew construct a vessel as closely a possible to what the ancient inca have available and use only balsa wood and other material available at the time and and set out from lima and peru capital and to try to reach the island of polynesia and some 5 and 000 mile away . his theory and like so much about ancient history and be impossible to prove with 100 % certainty and but the coverage of their journey provide for strong support that he be right . the film be really little more than narration of footage take during the 100 plus day expedition and but it be a very detailed description of what it be like and the trial and tribulation that they face . i often wish that academy award win documentary be easy to find and and this one from more than 50 year ago be still a interesting and informative a i be sure it be when it be first release .