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
Kon-Tiki (2012 film) have been utilized 1,500 years ago by the indigenous peoples of the region. Though he himself cannot swim or sail, he sets out on the treacherous 4,300 nautical mile–journey across the Pacific from Peru to Polynesia aboard the small raft, along with his crew of five men (and a macaw named Lorita). During the three months aboard the primitive vessel named after Inca god of sun and storm, Kon-Tiki, the crew's scientific reenactment of the legendary voyage from the coast of Peru to the Polynesian islands is met with setbacks in the form of storms, sharks, and other perils of