An inflatable bi-motor boat with tourists travels up-river passing the canyon of Iguacu waterfalls in southern Brazilian city Foz do Iguacu, September 20, 2007. A drought in Brazil has reduced the amount of water flowing over the falls to 900,000 litres per second, down from the normal flow of 1,300,000 to 1,500,000 litres per second.
REUTERS/PAULO WHITAKER