Please miss me with that Alienbullshit!!!

Yes, the truth is heavily oppressed. Main reason for keeping the slave hypothesis as mainstream might be that the monotheistic religious traditions need it to approve their own stories.

BUT why do europeans always come with the idea that a great monument by ancient people must have been built by aliens and not the people themselves?

HOW COME those aliens were all around the globe but NEVER in ancient rome or greece?!?!?!?!?!?!?!?! Must be racists those aliens... :D :D :D

I rather consider that those ancient people used techniques and methods that either are heavily hidden by the gatekeepers or not yet fully discovered by the scientists...