MAUES, BRAZIL - NOVEMBER 25: Passengers depart a transport riverboat in the Brazilian Amazon after arriving in Maues from Manaus on November 25, 2013 in Maues, Brazil. The approximately 20-hour journey in the riverboat costs about $25 USD and includes three meals while most passengers sleep in their own hammocks, usual for Amazon riverboat travel. Riverboats ferry people and cargo throughout the Amazon and often serve as the primary form of mass transportation. Manaus' Arena Amazonia will be a stadium venue during the forthcoming FIFA 2014 World Cup Brazil. Manaus is the largest city in the Amazon holding around 2 million and is the main hub for transport in the Upper Amazon basin. (Photo by Mario Tama/Getty Images)
Getty Images

Getty Images News Mario Tama