They look more Mayan/Aztec than egyptian, but still great build.
Edit: I didn't read the text but still don't think they look egyptian, though.
There are very lush areas along the Nile, the whole reason Egyptian civilization was able to flourish. EDIT: oh yeah, I guess those are shaped a bit more like Meso-American pyramids than Egyptian ones, you're right.
No matter the styling, architectural these are pretty close to being literally epic! As for the tomb, that's a great "mummy"! Would like to see some more pics, maybe from farther away?