Percy Jackson and the lightning theif

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Across
  1. 3. One look and your stone
  2. 4. camp____-______
  3. 6. god of the sea
  4. 7. Groover is one of these
Down
  1. 1. god of the sky
  2. 2. god of the underworld
  3. 3. aka the empire state building
  4. 5. Three sisters