There is a theory that the star shafts of the Great Pyramid could have been used as waveguides. They did contain copper rods. Perhaps they were just lightning r

There is a theory that the star shafts of the Great Pyramid could have been used as waveguides. They did contain copper rods. Perhaps they were just lightning rods. If so, then the pyramids (and other ancient megalithic structures with quartz at 72 degree intervals) and Angkor Wat and Longyou caves and Osireon may have been the longest (non-) line of sight communication system back then in ancient times: https://gemini.google.com/share/101970a04402 https://gemini.google.com/share/101970a04402 Observation of a salt-formed Hydrogen-tuned NV-center diamond might resolve some of these claims?