16th one

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Across
  1. 3. - Open grassy field
  2. 5. - Small, still water body
  3. 6. - Erupting mountain
  4. 7. - Small, still water body
  5. 13. - Cascading natural wonder
  6. 14. - Uncultivated, colorful plant
  7. 15. - Deep, rugged gorge
  8. 16. - Morning's first light
  9. 19. - Massive ice formation
  10. 20. - Arid, sandy terrain
  11. 21. - Wooded, natural area
  12. 22. - Flowing watercourse
  13. 24. - Elevated landform
Down
  1. 1. - Untamed animal kingdom
  2. 2. - Majestic natural elevation
  3. 4. - Bright, sun-facing bloom
  4. 8. - Forested area
  5. 9. - Vast marine expanse
  6. 10. - Delicate, winged insect
  7. 11. - Massive ice formation
  8. 12. - Evening light descent
  9. 17. - Lowland between hills or mountains
  10. 18. - Seaside sandy shore
  11. 23. - Land surrounded by water
  12. 25. - Inland water body