What caused the salt flats?

Related questions

1. How do I get to Uyuni?
2. Is the salt on Salar de Uyuni common table salt?
3. Why does Bolivia have two capitals?
4. What does Salar de Uyuni mean in English?
5. When should I visit the Salt Flats?
6. Is Bolivia poor?
7. Why is Salar de Uyuni reflection?
8. What is the weather like in Bolivia in September?
9. What is Salar de Uyuni famous for?
10. How often does it rain in Salar de Uyuni?

Tags

1. #drainage
2. #enclosed
3. #climate
4. #national
5. #source
6. #behind
7. #dries
8. #greater
9. #water
10. #where
11. #salts
12. #evaporation
13. #precipitation
14. #service
15. #flats
16. #formation
17. #these
18. #basin