Across
- 3. Enclosed shallow water
- 6. Mountain's highest point
- 8. Narrow sea channel
- 12. High flat terrain
- 16. Glacier crack
- 18. Small island
- 19. Coral ring island
- 20. Narrow sea passage
- 21. Underwater coral ridge
- 22. Natural rock formation
- 24. Expansive rolling land
- 25. Open grassy area
- 29. Recessed land area
- 30. Safe area for boats
Down
- 1. Glacially formed inlet
- 2. Earth sliding event
- 4. Group of mountains
- 5. Spongy wetland
- 7. Cold treeless plain
- 9. Fan-shaped sediment area
- 10. Floating sheet of ice
- 11. Small freshwater stream
- 13. Dense growth of shrubs
- 14. Bowl-shaped volcanic depression
- 15. Steep rocky face
- 17. Flowing body of water
- 23. Land projecting into sea
- 26. Permanent ice cover
- 27. Wind-sculpted hills
- 28. Excavated mining site