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 expedition sailed roughly west carried along on the Humboldt Current. The crew's first sight of land was the atoll of Puka-Puka on July 30. On August 4, the 97th day after departure, "Kon-Tiki" reached the Angatau atoll. The crew made brief contact with the inhabitants of Angatau Island, but were unable to land safely. Calculations made by Heyerdahl before the trip had indicated that 97 days was the minimum amount of time required to reach the Tuamotu islands, so the encounter with Angatau showed that they had made good time. On August 7, the voyage came to an end when the