Vital Alsar Pacific raft expeditions that ancient mariners knew the Pacific currents and winds as well as modern humans know road maps. It was hoped to double the distance achieved by the Kon-Tiki expedition, the 1947 raft crossing by Thor Heyerdahl from South America to the Polynesian islands. Like the Kon-Tiki expedition, the aim was to see if a raft made from the materials available in the 16th century in pre-Columbian South America, when such vessels had been observed by Spanish sailors, could navigate the journey. Having been surprised by the seaworthiness of La Balsa, being confident they could have gone on to reach Africa
Thor Heyerdahl with steps like those in Peru. But all over Polynesia, Heyerdahl found indications that Tiki's peaceable race had not been able to hold the islands alone for long. He found evidence that suggested that seagoing war canoes as large as Viking ships and lashed together two and two had brought Stone Age Northwest American Indians to Polynesia around 1100 , and they mingled with Tiki's people. The oral history of the people of Easter Island, at least as it was documented by Heyerdahl, is completely consistent with this theory, as is the archaeological record he examined (Heyerdahl 1958). In particular,