WESTBOUND

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Across
  1. 3. saw only 1 of these animals
  2. 6. flight duration of defense missile
  3. 8. expresso cafe in spearfish
  4. 10. free tourist stopover incentive
  5. 11. beautiful tourist town in S.D.
  6. 13. underground marvel
  7. 14. unique texas bovine
  8. 15. famous S.D. highway
  9. 18. 15 people inhabit this Wyoming town
  10. 21. 4 famous people stayed in this cabin
  11. 22. 50 ft. tall Native American sculpture
  12. 23. popular Hawaiian meat
  13. 25. steak cookout mode of transportation
  14. 27. scenic picnic area
  15. 28. no. of wall drug signs
Down
  1. 1. "I spy" number of plates
  2. 2. name of amoured vehicle
  3. 4. tall geological wonder
  4. 5. famous blue earth minn. resident
  5. 7. S.D. state insect
  6. 9. popular
  7. 12. Evans Plunge flow rate
  8. 16. worlds largest natural warm water indoor pool
  9. 17. woolly...
  10. 19. sun-dried plains pie
  11. 20. popular 4 legged animal
  12. 24. LaCrosse lookout point
  13. 26. missile