Pyramid-shaped Object Videotaped from Plane

On my flight back from Mexico City we're coming over near San Felipa and
came across this what I think is a pyramid.

Compare that mountain to this big mass, I mean you could see the angled corners and they're stepped and far adjacent to the left or it's like
there are buildings, I don't know what this is.

I've done some research and tried to find out if this was a
pyramid somewhere out there and I can't.