![Graham Hancock on Twitter: Graham Hancock on Twitter:](https://pbs.twimg.com/media/FCZsm-8XMAIk5hD.jpg:large)
Graham Hancock on Twitter: "The giant megaliths of Puma Punku bear witness to an immense task carried out in remote antiquity by unknown hands at an altitude of almost 13,000 feet above
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Reconstructing ancient architecture at Tiwanaku, Bolivia: the potential and promise of 3D printing | Heritage Science | Full Text
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