Norway's Thor Heyerdahl

Here is set of stamps issued in 2014 to commemorate the 100th birth anniversary of Norwegian adventurer Thor Heyerdahl. The raft in the stamp on the left was used in his 1947 Kon-Tiki expedition to sail (drift) from Peru to Easter Island. And the one of the right is the Ra II which he used to sail from Africa to Barbados in 1970. His theories on migration are controversial and perhaps somewhat racist. But he did prove it would have been possible for ancient peoples to cross vast oceans using the limited tools and technology they had available at the time.