does that disprove Jean-Pierre Houdin's beautiful theory, that there is an inner construction passage? https://www.youtube.com/watch?v=lasCXujNPfs&list=PLf_5zbxiQ4...
His theory involves the Grand Gallery being a purely functional structure required to accodate a trolley that helped serve as a counterweight to heave the massive stones that relieve the weight acting upon the roof of the King’s Chamber. Implicit in this theory is the idea that there are other ”ceremonial routes” from the outside to the King’s Chamber. It is very possible that this is actually the unopened anteroom that contains the provisions for the Pharos’ afterlife (or other artefacts that could be carbon-dated).
Or maybe another gallery leading to a third chamber. These are my theories.
Didn't they discover ship graves outside the pyramid?