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Hi There. Very interesting read. I had a thought about the location of the apex. The African plate is moving towards Europe (North) at a current rate of 1cm per year. I do not know if that is slower or faster than 4 thousand years ago, but it certainly suggests that when the Great Pyramid of Giza was built, the location of the apex was further to the south. Fun to think that it may have been exactly where the latitude in decimal degrees is the same as the speed of light in m/s.

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Hello and thank you for your valuable feedback. According to your data, the apex would have been further away from the line of latitude in question by about 4 meters, at least. There's also the phenomenon of polar wander that could be a relevant factor to consider as well. This topic really could benefit from more rigorous study and analysis than what I've offered here.

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