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The Salar de Uyuni, the largest salt flat in the world, covers 10,582 km² at an altitude of 3,656 meters in Bolivia. The result of the transformation of prehistoric lakes, its salt crust serves as a source of copper and a pool of lithium-rich brine. With 50-70% of the world's lithium reserves, it is essential in calibrating satellite sensors. In addition to being a transport route in the Altiplano, it is home to pink flamingos in the summer and several species of birds. The region has sparse flora, dominated by giant cacti, and is a notable tourist destination, especially between April and November, when it becomes a dry desert. Local legend suggests that the salt flat was formed by the tears of the deity Tunupa.
