Pre-Columbian rafts voyaged as far as Mexico and introduced metallurgy to the civilizations of that country. Some scholars and adventurers of the 20th and 21st century have asserted that the rafts and their crews journeyed thousands of miles across the Pacific to Polynesia, most notably Thor Heyerdahl who reached Polynesia on the Kon-Tiki raft. Several other people and groups have also built rafts based on prehistoric models and undertaken trans-Pacific voyages. Balsa is the Spanish word for raft. The use of rafts for commerce on the coasts of Peru and Ecuador, from northern Chile to southern Colombia, continued until the late 19th
Hanau epe explain the alleged ethnic difference between the two groups. Thor Heyerdahl popularised the view that they were a South American indigenous people, who were pale skinned with red hair. Heyerdahl's Kon-Tiki expedition was designed to show that migrants from Peru could have reached Polynesia. He believed that the Hanau epe were the earliest inhabitants of the island; they created its unique monuments, which resemble similar sculptures found in the Americas, but were eventually killed off by either the Polynesians or a later wave of migrants from the Northwest coast of America. Wilhelm and Sandoval in 1966 took the view that