A salt storm is a low-lying cloud of airborne salt that hovers over large areas, the result of wind sweeping over salt flats. Salt storms usually occur in places with large aboveground deposits of salt, such as those surrounding the Great Salt Lake in Utah and the Aral Sea. Salt storms are also a frequent phenomenon in the Salar de Uyuni region in Bolivia.
In couple of minutes we were running to our cars, visibility dropped to several yards and we ended up submerged in thick cloud of salt.
Altiplano, Bolivia, Salar de Uyuni near Tunupa Volcano