The GP at Giza has functions [grahamhancock.com]
It's debate for sure. ...when** ...the GP was built at Giza.
I view the GP and Giza plateau pyramids as a machine system accessing Earth phasic EM Wave form/Energy.
Not sure about seed vault and future cataclysm.
Mythology does tell that the Ancients sensed or understood their existence /doom was approaching.
The Mythology which the Inca have passed down to them from ancient Tiwanaku is mirror this message.
We have Capture of Luna (Moon) to Earth before the Holoscene ,...smaller satellite moons breaking up,
Celestial chaos /AKA Velikovsky. ...
It's real....just like 21 pieces of Comet Shoemaker Levy 9 auger into Jupiter.
It Falls to us to consider the rich Mythology and notice transitions.
When I see the inside of the GP,....it's Hydraulic water pump and EM wave guides in the chambers. ...
Has Tesla interface set up to draw upon Earth Plasma magnetosphere energy.
Tomb is comical...
You could use the facility as a seed vault. ..yet it's not my view the constructions were for that.
The Egyptian Star map in the links directs towards something of greater history import : )