I believe there's an ancient archaeological site in Bolivia at an elevation of over 12,000 ft that shows unequivocal evidence of a technological sophistication that, put in the context of when and
3-D-printed reconstructions provide clues to ancient site
Puma Punku: an impossible structure? - Bad Archaeology
Reconstructing ancient architecture at Tiwanaku, Bolivia: the potential and promise of 3D printing | Heritage Science | Full Text
The Mystery of Puma Punku's Precise Stonework | Amusing Planet
The Mystery of Puma Punku's Precise Stonework | Amusing Planet
Three images that prove the Ancient Builders of Puma Punku had access to advanced technology
The Mystery of Puma Punku's Precise Stonework | Amusing Planet
The Mystery of Puma Punku's Precise Stonework | Amusing Planet
The Builders of Puma Punku by Fahrenheit451
Reconstructing ancient architecture at Tiwanaku, Bolivia: the potential and promise of 3D printing | Heritage Science | Full Text
The Tiahuanaco Builders – the Ancient Builders
Pumapunku - Wikipedia
Three images that prove the Ancient Builders of Puma Punku had access to advanced technology
Puma Punku; A Mystery That May Be Greater Than the Pyramids | Gaia
Sacred Sites and Megalithic Mysteries: Puma Punku - How did they do it? : The Megalithic Portal and Megalith Map:
Crystal Ship: Puma Punku
Scientific Evidence that the Puma Punku H-Blocks Are Artificial Geopolymer | Ancient Architects - YouTube
Tiahuanaco Monuments (Tiwanaku / Pumapunku), Bolivia are made of geopolymer artificial stones created 1400 years ago. – Geopolymer Institute
The Mysterious Blocks Of Puma Punku. | by Rufat Rassulov | Lessons from History | Medium
Three images that prove the Ancient Builders of Puma Punku had access to advanced technology