Across
- 2. Part of Appalachians.
- 5. South Africa's tall range.
- 6. Divide Europe and Asia.
- 10. Backbone of the Americas.
- 13. Afghanistan's rugged range.
- 14. Eastern USA mountains.
- 17. Home to K2.
- 18. Long South American mountains.
- 19. Runs through Australia.
- 20. Across Northwest Africa.
Down
- 1. Border France and Spain.
- 3. Central Asia's celestial mountains.
- 4. Northern Europe's spine.
- 7. Arc through Eastern Europe.
- 8. Europe's extensive range.
- 9. Asia's towering range.
- 11. Major North American system.
- 12. California's snowy peaks.
- 15. Home to Denali.
- 16. Between Black and Caspian Seas.