The Kantuta expeditions were two separate Pacific Ocean expeditions on balsa rafts led by the Czech explorer and adventurer Eduard Ingris in 1955 and 1959, inspired by Thor Heyerdahl's Kon-Tiki expedition, The goal of Ingris's Kantuta expeditions was to repeat the success of the Kon-Tiki and confirm Heyerdahl's theory about the migration of early South Americans to Polynesia.