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 great diversity in race, nationality, religion and political viewpoint in order to demonstrate that at least on their own little floating island, people could cooperate and live peacefully. Additionally, the expedition took samples of marine pollution and presented their report to the United Nations. Heyerdahl built yet another reed boat, "Tigris", which was intended to demonstrate that trade and migration could have linked Mesopotamia with the Indus Valley Civilization in what is now Pakistan and western India. Tigris was built in Iraq and sailed with its international crew through the Persian Gulf to Pakistan and made its way into the