a journey made in 1947 by the Norwegian explorer, Thor Heyerdahl, and five other people. They sailed a raft, called the Kon-Tiki, from Callao in Peru to Tuamoto Island in the South Pacific Ocean in order to show that the Polynesians had done this in earlier times and were therefore related to the Incas.
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.
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