Egyptian civilization was not a "development", it was a legacy.

There’s so much more..

The Egyptians didn’t build the pyramids, they found and repurposed them.

Different stone would explain the light change. As for lighting, it would have just been something simple, like reflecting the sunlight in there. I don't think there's anything magical about Egypt, just a different mindset of the time.

Very interested as I am a newbie to the “conspiracy” sector. My whole family thinks I’m crazy for believing flat earth, bush did 9/11, etc

The pyramids might well lead to a gateway into another pyramid type structure. It says: “Speed of light: 299,792,458 m/s. Coordinates of the Great Pyramid of Giza: 29.9792458°N. Coincidence ?

Genesis 6:2-4, "2 that the sons of God saw that the daughters of mankind were [a]beautiful; and they took wives for themselves, whomever they chose. 3 Then the Lord said, “My Spirit will not [b]remain with man forever, [c]because he is also flesh; [d]nevertheless his days shall be 120 years.” 4 The [e]Nephilim were on the earth in those days, and also afterward, when the sons of God came in to the daughters of mankind, and they bore children to them. Those were the mighty men who were of old, men of renown."

Prolly something to do with the high content of quartz crystal in the rose granite its built out of. Its like +50% its pretty high. Imagine that would effect the way light moves through the stone.

Egyptians were and still are nomads I believe they stumble upon these abandoned structures and claimed them for their own. If they had the tech they would have continued to build the same....

who added the 'Egyptian' style music behind the voice?

It was rumoured that the Egyptians had an ambient liquid that filled the hieroglyphs,making them glow