Yes it was and there is tons of proof if you are prepared to travel the globe to find it.
For instance the Zulus in Africa have a tale that is also told by both Aboriginals and Maoris in other countries that humanity left the red planet by inseminating the females and placing them on flat discs and flying them to the blue planet.
All comes down to interpretation really.
Bit like trying to explain the concorde to stone age man.
He will see what he is capable of seeing and express it accordingly as to his words used at that time.
So! The face on mars and the so called pyramids on mars. Well we have found Nasa and others trying desperately to cover it all up but then things don’t always go accroding to plan.
Anything made of stone will weather with time but what if you are shown photographs that exists of the face on mars from GROUND LEVEL!
Well I was and did see those photos and can tell you how could ground shots exists unless someone has already been there.
If captured or obtained technology occurred back in the late 40’s then it is quite feasible and possible.
Cover ups of stories like alternative 3 and others are out there and all it takes is collection of the proof.
Secret alien bases do exist on earth and we have seen a couple so why is the governments of specific countries determined to keep the general public blind to all of this. Because of religious paranoia and the resulting social order breakdown that they see as a risk in the public arena.
Religious belief has a very strong hold on humanity but who has honestly been to airports in places like Dubai or elsewhere. Replicas of UFO’s etc are everywhere these days. So we as humans have to grow beyond the belief that we are alone because we are not and never will be. Gosh even the vatican knows that with what they have hidden underground.