The Salar de Coipasa, located in the Altiplano region of western Bolivia, covers an area of approximately 2,500 square kilometers (960 square miles). The word “salar” describes arid, closed basins in which evaporation of mineral-rich waters leads to the formation of thick, flat salt deposits. the environment of Salar de Coipasa is arid, it does receive constant water from the Lauca River flowing in from the north.