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
Marquesan Dog and is visible today at the site of Iʻipona. Only one of the dog carving is discernible now; the other one has weathered away. In 1956, Norwegian adventurer and ethnographer Thor Heyerdahl later claimed the reliefs on Tiki Makiʻi Tauʻa Pepe were llamas or pumas instead to bolster his theory that Polynesia was settled from South America. Later unidentified writers and rumors have insinuated that Heyerdahl deliberately altered and defaced the images in his process of restoring them. The modern consensus is that the carvings represent the extinct dog; they do not represent llamas, pumas or rats. In 1956, Robert