Bolivia, 2000
Photograph by Joel Sartore
A gecko sheds its perfectly camouflaged skin on a tree branch in Madidi National Park, Bolivia. Covering 4.7 million acres (1.9 million hectares) in northwestern Bolivia, Madidi encompasses 19,000-foot (5,791-meter) glaciers in the west, rain forests in the east, pampas in the north, and cloud forest and dry forest in between. It is one of the most biologically diverse areas in South America.
