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Ancient Observatories, Timeless Knowledge

Sun-Earth Day Presents: Ancient Observatories, Timeless Knowledge

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  • Chichen Itza
  • Photo: Troy Cline
  • Chichen Itza
  • Photo: Troy Cline
  • Chichen Itza
  • Photo: Troy Cline
  • Dzabilchaltun
  • Photo: Troy Cline
  • Chichen Itza
  • Photo: Lou Mayo
  • Chichen Itza
  • Photo: Lou Mayo
  • Chichen Itza
  • Photo: Clive Ruggles
  • Owens Valley Solar Array
  • Brodgar
  • Photo: Robin Rausch
  • Brodgar
  • Photo: Robin Rausch