Hey·er·dahl (hāʹər-däl', hīʹ-), Thor. Born 1914.
Norwegian ethnologist and explorer who led the Kon Tiki expedition (1947) on a raft across the Pacific Ocean from Peru to Tuamotu to demonstrate that Polynesians may be of South American origin. In 1970 he crossed the Atlantic Ocean from Morocco to Barbados in a papyrus boat to show that ancient Egyptians might have sailed to America.
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