The Salar de Uyuni, in the middle of the Andes in southern Bolivia, is the world’s largest salt flat. It is the legacy of a prehistoric lake that dried up and left a desert landscape of almost 11,000 square kilometers of bright white salt, rock formations and cactus islands. Its mystical expanse can be seen from the central island of Incahuasi. Although fauna is scarce in this unique ecosystem, it is home to several pink flamingos.