Salar de Uyuni

The Salar de Uyuni in Bolivia is the world's largest salt flat at 10,582 square kilometers, sitting at 3,656 meters above sea level on the Altiplano. After rain, a thin layer of water creates a perfect mirror reflection of the sky — making it almost impossible to tell where the ground ends and sky begins. It is one of the most photographed natural phenomena in the world. The Salar contains 10 billion tonnes of salt and approximately half the world's known lithium reserves — critical for electric vehicle batteries, making Bolivia a potential energy superpower of the 21st century. The flat, featureless surface is used to calibrate satellites.