Stonehenge Crossword Puzzle

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Across
  1. 5. When was Stonehenge found/built?
  2. 6. Where is Stonehenge located?
  3. 7. How much does a ticket cost in 1975?
Down
  1. 1. How much does a ticket cost in 2025?
  2. 2. How much does a ticket cost in 2000?
  3. 3. What is this enigma called?
  4. 4. What month was the Great Fall?