Puzzle #17

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Across
  1. 2. A flat-bottomed boat used in Venice
  2. 5. An underground passageway
  3. 8. A fertile area in a desert
  4. 10. When the sun or moon is temporarily blocked
  5. 12. A heavy object used to keep a boat in place
  6. 13. The time when the sun disappears below the horizon
  7. 14. A headpiece worn by a king or queen
  8. 15. A long-distance running race
  9. 16. A tower with a guiding light
  10. 22. Related to ocean tides
  11. 23. A boat that carries people across water
  12. 25. A powerful rotating storm
  13. 26. A dense, tropical forest
  14. 29. A large tree with aerial roots
  15. 31. Hills of sand shaped by the wind
  16. 33. A gentle wind
  17. 35. A fortress often occupied by royalty
  18. 36. A vehicle that flies in the sky
  19. 37. An elevated outdoor platform
  20. 40. A person who navigates boats
  21. 41. A landmass surrounded by water
  22. 43. A large tent or structure
  23. 44. A mythical half-human, half-fish creature
  24. 45. A royal ruler
Down
  1. 1. A deep valley with steep sides
  2. 3. A mountain that erupts lava
  3. 4. A handheld source of fire
  4. 6. A large, shaggy animal of North America
  5. 7. The preserved remains of an ancient organism
  6. 8. A large group of musicians
  7. 9. A violent weather event
  8. 10. A long journey for exploration
  9. 11. A striped African animal
  10. 13. A type of open-toed shoe
  11. 15. A natural satellite of a planet
  12. 17. A hidden collection of valuable items
  13. 18. A device that generates heat
  14. 19. A violent rotating column of air
  15. 20. An optical illusion often seen in deserts
  16. 21. An artwork made from small colored pieces
  17. 24. A natural flowing watercourse
  18. 27. A triangular ancient structure
  19. 28. A large sailing ship from the past
  20. 30. A bird that cannot fly
  21. 32. A space rock orbiting the sun
  22. 34. The flower of a plant
  23. 38. A mythological creature with a lion’s body
  24. 39. An underwater missile
  25. 42. A portable light source