If you really think that some sort of unknown ancient supertechnology was used for creating the Egyptian's artifacts and giant structures, I'd strongly suggest

If you really think that some sort of unknown ancient supertechnology was used for creating the Egyptian's artifacts and giant structures, I'd strongly suggest you watch these two videos. They do an excellent job of completely demythifying all of those poorly substantiated speculative ideas. https://www.youtube.com/watch?v=mysYT260dqU&list=PLuROoe7EZ3dDuXJE6kcjc0Q9M068T5Pms https://www.youtube.com/watch?v=mysYT260dqU&list=PLuROoe7EZ3... https://www.youtube.com/watch?v=n_NguZUDku4&t=9216s https://www.youtube.com/watch?v=n_NguZUDku4&t=9216s