Salar de Uyuni (Salar de Uyuni) located in southwestern Bolivia. Near the crest of the Andes. Away from the capital of La Paz, Bolivia, approximately 185 miles. The territory 10,582 square kilometers. high from sea level 3656 meters, caused by the plateau Altis Plano (Altiplano) on the Andes of Bolivia No drain The water from the mountains surrounding the confluence until a large lake with high salinity. Great Lakes since prehistoric times, this was a severe solar evaporation. Leaving salt crystals that slowly formed thicker. Into a sea salt present.