![Update II] The Megalithic Crystalline Geopolymer Blocks of Peru (A Hypothesis) | by Daniel D. Barber | Medium Update II] The Megalithic Crystalline Geopolymer Blocks of Peru (A Hypothesis) | by Daniel D. Barber | Medium](https://miro.medium.com/v2/resize:fit:596/1*EU9unjDZ0oo4hEXICAM0Sw.jpeg)
Update II] The Megalithic Crystalline Geopolymer Blocks of Peru (A Hypothesis) | by Daniel D. Barber | Medium
Avantgardens - Dry stone walls of Saksaywaman, Peru The site built about 1100 CE by the Killke culture is famed for its remarkable large dry stone walls with boulders carefully cut to
![The 15th century Incan Sacsayhuamán citadel in Cusco, Peru. The huge stones, used in the construction of its massive terrace drystack walls (no mortar), can weight up to almost 200 tons, and The 15th century Incan Sacsayhuamán citadel in Cusco, Peru. The huge stones, used in the construction of its massive terrace drystack walls (no mortar), can weight up to almost 200 tons, and](https://preview.redd.it/r3eyiftkgvj71.jpg?auto=webp&s=62f5920897ebff42491e87dc0a799ad0f80fb788)