The Atacama Desert - Chile
is a plateau in South America, covering a 1,000-kilometre strip of land on the Pacific coast, west of the Andes mountains. It is the driest non-polar desert in the world. According to estimates the Atacama Desert proper occupies 105,000 square kilometres, or 128,000 square kilometres.If the barren lower slopes of the Andes are included.Most of the desert is composed of stony terrain, salt lakes, sand, and felsic lava that flows towards the Andes.