Bolivia's Salar de Uyuni is the world's largest salt flat stretching over 4050 square miles http://on.natgeo.com/2pdkxCu

Bolivia's Salar de Uyuni is the world's largest salt flat stretching over 4050 square miles http://on.natgeo.com/2pdkxCu 

https://twitter.com/NatGeoTravel/status/860177288234758144