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
Torgeir Sæverud Higraff Easter Island after 43 days at sea, becoming the first rafts to have sailed to Easter Island in modern times. The return journey proved more difficult due to unusual weather patterns and the expedition was terminated halfway between Easter Island and South America. Torgeir Sæverud Higraff Torgeir Sæverud Higraff is an explorer, teacher and author with special interest in prehistoric transoceanic contact. Like Thor Heyerdahl, Higraff combines history, anthropology and traditional knowledge with expeditions. In 2002, the year Heyerdahl died, Higraff decided to recreate the Kon-Tiki expedition, and in 2006 the Tangaroa Expedition sailed from Peru to Raiatea in eastern