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Across 1. probably the most famous mountain in the Rockies 7. highest mountain in the Appalachians 10. highest mountain in the world 11. a group of mountain ranges in one area 14. highest mountain in Washington 17. recent active volcano in the US 18. highest mountain in Africa

Down 2. mountain belt that runs across northern Africa, Southern Europe & Asia 3. second highest mountain in the world 4. the mountain belt that goes through the Pacific Ocean 5. only active volcano on the mainland of Europe 6. highest mountain of the Rockies 7. a group of mountains 8. highest mountain in the Alps 9. natural landforms that reach high elevations 12. group of mountain ranges and systems 13. highest mountain in California 15. one possible explanation for the formation of mountains 16. one of the possible sources of mountains