Are the salt flats really salt?

Related questions

1. How deep is the salt in the salt flats?
2. How big are the salt flats?
3. Why is there salt in Death Valley?
4. What are the salt flats called in Bolivia?
5. Do I need yellow fever vaccine for Bolivia?
6. What metal is found in the Uyuni Salt Flats?
7. Are salt flats reflective?
8. What does Salar de Uyuni mean?
9. How thick is the Bonneville Salt Flats?
10. Why is Salar de Uyuni famous?

Tags

1. #flats
2. #crust
3. #drive
4. #found
5. #western
6. #between
7. #perfectly
8. #unique
9. #thick
10. #cover
11. #environment
12. #easily
13. #bonneville
14. #wendover
15. #salty
16. #great
17. #large