Across
- 4. - Waterfall on the Zambezi River in Africa
- 5. - Salt lake bordered by Jordan and Israel
- 6. - Largest hot desert in the world
- 8. - Desert in the southwestern United States
- 12. - Tallest mountain in the world
- 14. - Major mountain range in Australia
- 15. - Iconic volcano in Japan
- 18. - Major mountain range in Europe
- 19. - Region at the southern tip of South America
Down
- 1. - Archipelago known for its unique wildlife
- 2. - Longest river in North America
- 3. - Largest coral reef system
- 7. - Highest mountain range in the world
- 9. - Longest river in South America
- 10. - Vast savanna ecosystem in Africa
- 11. - Vast desert in Asia
- 13. - Massive canyon carved by the Colorado River
- 16. - Longest river in the world
- 17. - Longest wall in the world
- 20. - Longest continental mountain range