Father's Day Puzzle

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Across
  1. 3. Projecting part of a fortification
  2. 5. Active during twilight hours
  3. 9. Crescent-shaped architectural aperture
  4. 12. Division of a heraldic shield (or Swiss state)
  5. 13. Salmon ready to spawn (Alaskan slang)
  6. 15. Seeing-stone used for distant vision in Middle-earth
  7. 16. Insect often mimicked in dry fly tying
  8. 17. Calm pocket behind a current
  9. 20. Complex wetland of bog, fen, and swamp
  10. 22. Feather wound around a fly’s hook
  11. 23. Fortress of the Dark Lord Sauron
  12. 24. Interwoven river channel form
Down
  1. 1. Sword reforged from the shards of Narsil
  2. 2. Pertaining to Roman principles of proportion
  3. 4. Covered walkway used in ancient Greek architecture
  4. 6. Horizontal structure above classical columns
  5. 7. Triangular space between arch and rectangular frame
  6. 8. River branch that rejoins the main flow
  7. 10. Simplest of the three classical orders
  8. 11. Primeval forest ruled by Ents
  9. 14. Outdoor guide or river attendant
  10. 16. Small coastal inlet or sheltered bay
  11. 18. Temporary Alaskan fishing cabins
  12. 19. Ancient ruined city in western Eriador
  13. 21. Vertical side of a window or door frame