Just because the evidence has been witheld from mainstream media, doesn't mean it doesn't exist.
I have mentioned in another thread that there are whistleblower archeologists who have found the evidence and it has been commandeered and 'buried' in the vaults of The Smithsonian Institute.
All this discussion about what is and what isn't true will be over by year end.
All indications are that Disclosure will happen soon.
After that, info that has been supressed for 60 yrs will emerge, including archeological evidence about ancient contact with ETs