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Across
  1. 5. Native fruit tree
  2. 9. Massive trunk tree
  3. 10. Massive locust outbreak
  4. 11. Distinctive Australian flower
  5. 12. Dominant tree genus
  6. 16. Western desert region
  7. 18. Distant space region (in Aussie trivia)
  8. 19. Mountain ranges near Alice
  9. 22. Creek in outback
  10. 24. Scrubland vegetation
  11. 25. Mountain range in Victoria
Down
  1. 1. Unusual shaped tree
  2. 2. Major inland river
  3. 3. Mountain ranges
  4. 4. Mountain range in WA
  5. 6. Desert in northwest
  6. 7. Range in Pilbara
  7. 8. Spider flower native plant
  8. 13. Iron ore mining region
  9. 14. Golden flowering tree
  10. 15. Rugged northern region
  11. 17. Treeless plain
  12. 20. National serviceman
  13. 21. Bush fuel
  14. 23. Desert of red sand