Chuck on the CFApps7865 channel has highlighted the fact that the Giza pyramids are build onto enormous square-cut bedrock plynths but it is the boundary or perimeter wall of the Khafre Pyramid that really caught my attention, as it may well prove that the pyramids of Egypt are in fact truly ancient, dating back 7-10,000 years. Images are taken from Google Images and Google Earth for educational purposes only. Watch Chuck's video at youtu.be/L29CQh6kor8 Read the geological paper at hal.archives-ouvertes.fr/hal-00319586/document