Tiahuanaco Monuments (Tiwanaku / Pumapunku), Bolivia are made of geopolymer artificial stones created 1400 years ago. – Geopolymer Institute
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Figure 6 from Tiahuanaco monuments ( Tiwanaku / Pumapunku ) in Bolivia are made of geopolymer artificial stones created 1400 years ago | Semantic Scholar
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Twitter 上的Graham Hancock:"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 sea
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