Why do planes never fly over Antarctica?

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Tags

1. #rules
2. #their
3. #flight
4. #flights
5. #region
6. #antarctica
7. #mountain
8. #planes
9. #strict
10. #regarding
11. #reasons
12. #example
13. #safety
14. #reason
15. #political
16. #tibet
17. #never
18. #banned
19. #dangerous
20. #ranges
21. #routes
22. #going