Best Crossword Ever

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Across
  1. 4. Prophet from Greece (and the Matrix films)
  2. 8. Azure (perhaps) part of the Appalachians (4,5)
  3. 10. By the fact itself (4,5)
  4. 11. Olympians beat their asses (6)
  5. 12. Protected area of the Philippines located in the middle of the Sulu Sea (9,5)
  6. 13. A type of turtle (also might describe Stalin) (3,7,5,6)
  7. 17. Largest turtle, dives the deepest and goes the furthest (11)
  8. 18. A good town for covrigi, stoner bnb hosts and beautiful snowy walks (6)
  9. 20. A buzzword (9)
  10. 22. Transfrontier Conservation Area where Angola, Botswana, Namibia, Zambia and Zimbabwe converge (7,7)
  11. 23. Something you are (9)
  12. 25. Something I am (11)
  13. 27. Believed by some to have written Shakespeare's works (7,5)
  14. 28. 'My uncrowned king' (7)
Down
  1. 1. Most famously crossed a mountain (8)
  2. 2. Wolfe Tone (8)
  3. 3. Arabian call of approval (13)
  4. 5. carved into the mountains of Ifugao in the Philippines by ancestors of the indigenous people. They are frequently called the "Eighth Wonder of the World" (6,4,8)
  5. 6. Joyce's A Portrait's original title (7,5)
  6. 7. Narrow inlet with steep sides or cliffs (5)
  7. 9. A biome, also known as a snow forest (6,6)
  8. 14. Country with the most wind turbines (5)
  9. 15. "I think therefore I am" (6,4,3)
  10. 16. State sport of Maryland (8)
  11. 19. General term for a prisoner's legal right to challenge the legality of their detention
  12. 21. He was, and might again be the greatest poet of Ireland ;) (6)
  13. 24. A type of biome where the tree growth is hindered by low temperatures and short growing seasons (6)
  14. 26. Reef - Cozumel, Mexico (8)