Yawalapiti tribe children attempt to spear fish in the Xingu National Park, Mato Grosso State, May 7, 2012. IIn August the Yawalapiti tribe will hold the Quarup, which is a ritual held over several days to honour in death a person of great importance to them. This year the Quarup will be honouring two people - a Yawalapiti Indian who they consider a great leader, and Darcy Ribeiro, a well-known author, anthropologist and politician known for focusing on the relationship between native peoples and education in Brazil. Picture taken May 7, 2012. REUTERS/Ueslei Marcelino (BRAZIL - Tags: SOCIETY ENVIRONMENT) ATTENTION EDITORS - PICTURE 04 OF 28 FOR PACKAGE 'LIFE WITH THE YAWALAPITI TRIBE' TEMPLATE OUT Published: Kvě. 15, 2012, 5:09 odp.