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Across
  1. 2. Split or fissure in rock
  2. 6. Group of islands
  3. 8. Elevated rugged terrain
  4. 10. Passage through terrain
  5. 11. Glacial debris ridge
  6. 12. Mountain tops
  7. 15. Submerged ridge in water
  8. 18. Chain of mountains
  9. 19. High land jutting into water
  10. 23. Shelter for ships
  11. 25. Loose stones on slope
  12. 27. Eroded narrow valley
  13. 28. Submerged mountain
  14. 29. Wind-blown sand hill
Down
  1. 1. High steep bank
  2. 3. Edge of a lake
  3. 4. Ecosystem of swamps or marshes
  4. 5. Dense tropical forest
  5. 7. Base of a mountain
  6. 9. Open grassy region
  7. 10. Glacier ice crack
  8. 13. Natural water sources
  9. 14. Land between hills
  10. 16. Deep ravine carved by water
  11. 17. Large rounded rock
  12. 20. Path along a ridge
  13. 21. Stone markers for navigation
  14. 22. Eroded barren terrain
  15. 24. Small flowing water
  16. 26. Small stream or rivulet