What is the Salar de Uyuni?

In my project I am doing story about Salar de Uyuni. You can read here part of my project and I decided to include it in my blogger because I think it is very interesting story. Salar de Uyuni is the world's largest salt flat at 4,085 square miles. The largest Salar in the world, Salar de Uyuni, is located within the Altiplano of Bolivia in South America. The Salar de Uyuni covers approximately 3,100 square miles, and it is a major transport route across the Bolivian Altiplano due to its flatness. In the wet season flood waters produce a surreal mirror effect. On this vast white plain there is only one building, the Salt Hotel. The Salar de Uyuni, a salt desert, was once an inland sea, or giant salt water lake, but the water vanished into the thin dry air of Andean altitude. All that remains is the salt, tens of meters thick, lying stark beneath bright sky: a sun-bleached skeleton of a dead sea. Some 40,000 years ago, the area was part of Lake Minchin, a giant prehistoric lake. When the lake dried, it left behind two modern lakes, Poopó Lake and Uru Uru Lake, and two major salt deserts, Salar de Coipasa and the larger Uyuni. Uyuni is roughly 25 times the size of the Bonneville Salt Flats in the United States. Salar de Uyuni is estimated to contain 10 billion tons of salt, of which less than 25,000 tons is extracted annually.