Salar d’Uyuni, is the world’s largest salt flat at 10,582 square kilometers (4,086 sq mi), located in the tropical Andes, bolivian altiplano. Photo source: ©© Psyberartist
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About 6 million years ago, a mile-high field of salt formed across the entire Mediterranean seafloor, sucking up 6 percent of the oceans’ salt…
