How the pyramids were built in Egypt

they literally proved it through a demonstration and chemical analysis maybe do some reading and watch the video on youtube: ▶ this video

in “How the pyramids were built with ancient concrete” · View on HN

Nice to see geopolymers mentioned. Geopolymers are becoming more common around the world. They can be formulated from local materials and in many cases have superior material properties to Portland cements. Joseph Davidovits of the Geoplymer Institute has been instrumental in the spread of his lifes work, geopolymers. Davidovits also claims that many ancient megalitic constructions were made using geopolymers which fits with stories of technologies that soften rocks. Geopolymer Institute is an amazing resource on the subject. [link] Pyramids of geopolymer, ▶ this video

in “Alternative materials could shrink concrete’s giant carbon footprint” · View on HN

User aaaaaatttuyy has not mentioned the fact that NASA has recently found a crater under the Hiawatha glacier in Greenland that was, at the time of discovery, supposed to be 12k to 3M years old. But a paper from March that tries to cross-validate this finding by looking at sedimentary data in South-America finds that the impact must have occurred 12,835 ~ 12,735 years ago. Source: [link] And this, is what Graham Hancock has been supporting for so long. And yeah Semmelweis was full of himself as well. Now to answer your questions about archeological sites: - Atlantis (when) [link] - Atlantis (where, the Richat Structure) [link] - Göbekli Tepe [link] - Underground city around the world: [link] - Underground city under the Giza plateau [link] - Huge cities in the Amazon bassin (a giant garden) [link] - The Sphynx of Egypt is more ancient than thought [link] - Underwater city in japan [link] - Underwater city off the coast of Cuba [link] - Similarity between various archeological sites: [link] - The Antikythera Mechanism [link] - The Ellora caves in India (as much work as the buildingof the great pyramid): [link] - The "laser-cut" Lomas Rishi caves (India again): [link] - The fact the Giza pyramid and some megalithic structures around the world (some in Corsica for instance) are north-aligned with a greater precision than Copernic's observatory: [link] - The Sahara used to be green and turned into sand in a generation, around **11,000** years ago: [link] - The Great Pyramid could

in “An Archaeologist Challenges Mainstream Scientific Thinking (2017)” · View on HN

I had read an interesting theory stating that the building blocks were cast in place, similar to pouring concrete. Here a video explaining the theory: ▶ this video

in “Archaeologists Uncover How Egyptians Built the Great Pyramid of Giza” · View on HN