If the Egyptian pyramids were actually part of a larger structure what purpose would they have served?

Nipples, where smaller planets could nurse.

Probably a tomb

Obviously energy collectors for the massive space ships.

Markers for the tombs of the ancient kings on a 1:1 scale map of the world.

Obstacles to prevent invasion by freakishly huge tanks.

Disco hall/roller rink

a nose for a really big stone face buried under the desert.

Death Star

Skate park

Anchor point for assembly

Landing platforms for spaceships.

They were natural stone formations carved and excavated, long long ago. Then parts collapsed so they're called tombs.

Just a coincidence that several of them contain kings. Can't really explain that part.

Maybe when you call something like a tomb, treasure starts to spawn there randomly.

They were just natural rock formations that people decided to settle around and eventually hollow out to build tombs in.

Landing pad standoffs

Star map

c'mon

Vogue...

The documentary Stargate already answered this question

It's a bit of sprue left from where the earth was trimmed from the mold

Yeah, that's where I went too. They're big dumb heavy piles. Maybe a dam for a river in a cave with a triangular cross-section?

Crop irrigation engine.