What causes salt flats?

Related questions

1. What's interesting about Bolivia?
2. Does it rain a lot in Bolivia?
3. What months are winter in Bolivia?
4. What is the weather like in Bolivia in July?
5. When should I go to Patagonia?
6. Why are salt flats flat?
7. How big are the Bolivian Salt Flats?
8. When should I go to Colombia?
9. What season is it in Bolivia right now?
10. What is the best time to visit Bolivia?

Tags

1. #evaporates
2. #vapour
3. #replenished
4. #closed
5. #behind
6. #dried
7. #heated
8. #rainfall
9. #faster
10. #climate
11. #would
12. #water
13. #drain
14. #where
15. #layer
16. #lakes
17. #minerals
18. #desert
19. #solid
20. #flats
21. #dissolved
22. #hollows