Across
- 3. Vast arid region
- 6. Amount of precipitation
- 8. Oceanic ground terrain
- 12. Mountain's highest point
- 14. Piled stones landmark
- 15. Hot spring eruption
- 16. Area draining to a river
- 18. Low area between hills
- 19. Moving ice body
- 21. Coastal shallow lake
- 22. Large Earth crack
- 26. Glacier debris ridge
- 27. Base of a mountain
- 29. Erupting mountain
- 30. Large water inlet
Down
- 1. Marine biodiversity structure
- 2. Large water collection area
- 4. Steep rock face
- 5. Small sheltered bay
- 7. Deep sea inlet
- 9. Underground water reservoir
- 10. Coastal swamp trees
- 11. Inland remote area
- 13. Floating ice mass
- 17. Group of islands
- 20. Shelter for ships
- 23. Deposited earth particles
- 24. Smaller sea inlet
- 25. High steep bank
- 28. Narrow land connection