Described as the Olympics of indigenous sports, the World Indigenous Games were held last week in the city of Palmas in the Amazon region of Brazil. Almost 50 ethnic groups from around the globe gathered to participate in bow and arrow shooting, spear tossing, log racing, tug-of-war, xikunahati (a football-like game played on all fours), beauty contests, canoe racing and more. The event was a true cultural exchange on a global level. Check out some amazing images at Mashable.com.