Shrunken head heads of monkeys or sloths. Some even used goatskin. Kate Duncan wrote in 2001 that "It has been estimated that about 80 percent of the tsantsas in private and museum hands are fraudulent," including almost all that are female or which include an entire torso rather than just a head. Thor Heyerdahl recounts in "Kon-Tiki" (1947) the various problems of getting into the Jívaro (Shuar) area in Ecuador to get balsa wood for his expedition raft. Local people would not guide his team into the jungle for fear of being killed and having their heads shrunk. In 1951 and 1952
Thor Heyerdahl after him, as are HNoMS "Thor Heyerdahl", a Norwegian Nansen class frigate, along with "MS Thor Heyerdahl" (now renamed "MS Vana Tallinn") and "Thor Heyerdahl", a German three-masted sail training vessel originally owned by a participant of the Tigris expedition. Thor Heyerdahl Upper Secondary School in Larvik, the town of his birth, is also named after him. Heyerdahl's numerous awards and honours include the following: Thor Heyerdahl Thor Heyerdahl (; October 6, 1914 – April 18, 2002) was a Norwegian adventurer and ethnographer with a background in zoology, botany, and geography. He became notable for his "Kon-Tiki" expedition in 1947,