Ancient China

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Across
  1. 1. they built a hidden city on top of the mountains
  2. 4. they built Floating City
  3. 5. where the Pyramid of the Moon is located
  4. 7. they made giant stone heads
Down
  1. 2. first superheroes of South America
  2. 3. they built Cities hidden in the jungle
  3. 6. Tula is its capital
  4. 8. they built a big city out of clay