05-3-241-67. In the Upper Xingu region of Brazil’s Mato Grosso state, a group of Waura Indians fish in the Puilanga Lake near their village. The Upper Xingu Basin is home to an ethnically-diverse population, with the 2,500 inhabitants of 13 villages speaking languages with distinct Carib, Tupi and Arawak roots. While they occupy different territories and preserve their own cultural identities, they co-exist in peace. Brazil. July, August and September 2005.