Jiao-Long on Twitter: "Ancient stone blocks in Pumapunku are shaped into highly complex geometries. Some of the H-shaped blocks have approximately 80 faces on them & all match each other with great
![Tiahuanaco Monuments (Tiwanaku / Pumapunku), Bolivia are made of geopolymer artificial stones created 1400 years ago. – Geopolymer Institute Tiahuanaco Monuments (Tiwanaku / Pumapunku), Bolivia are made of geopolymer artificial stones created 1400 years ago. – Geopolymer Institute](https://www.geopolymer.org/wp-content/uploads/Tiwanaku-Pumapunku-300x170.jpg)
Tiahuanaco Monuments (Tiwanaku / Pumapunku), Bolivia are made of geopolymer artificial stones created 1400 years ago. – Geopolymer Institute
![Tiwanaku: Spiritual and Political Centre of the Tiwanaku Culture - Gallery - UNESCO World Heritage Centre Tiwanaku: Spiritual and Political Centre of the Tiwanaku Culture - Gallery - UNESCO World Heritage Centre](https://whc.unesco.org/uploads/thumbs/site_0567_0004-360-360-20151104160929.jpg)