I know NASA lied and tried to claim it was a trick of shadows, but then the European Space agency went by with a probe and rechecked and found it was real.
Anyway, was this made by...
* aliens from another solar system
* natives of mars (e.g. The Ice Warriors)
* time travel
* ancient humans
* God
What?(Edited 25 seconds later.)

It's a trick of shadows. Higher resolution photos show no such face.
@29,102 (Fake anon !ZkUt8arUCU)
This.
A trick of light and shadow. You may as well be picking out faces in clouds. There is nothing meaningful here except what you interpret with your own human eyes.
Edit: pic is Galle crater (not Cydonia) BTW, but I don't think aliens engineered giant emoticons for us to find either.
(Edited 2 minutes later.)
@OP
> I know NASA lied and tried to claim it was a trick of shadows, but then the European Space agency went by with a probe and rechecked and found it was real.
>
> Anyway, was this made by...
> * aliens from another solar system
Mebbe.
> * natives of mars (e.g. The Ice Warriors)
Wat
> * time travel
WTF?
> * ancient humans
WE USED TO BEABLE TO PLANET SKIP?!
> * God
lolno
>
> What? @29,102 (Fake anon !ZkUt8arUCU)
That is a face. It's always been an anthropomorphic turtle though.
@29,285 (Harleen Quinzel !!Sx3+/eCTM)
> > * natives of mars (e.g. The Ice Warriors)
> Wat
>
Maybe Mars had life once. There are legends of the the Ice Warriors, calling them, a fine and noble race who built an empire out of snow.
> > * time travel
>
> WTF?
Humans from the future had space travel. They travel back in time and make a face on Mars. Simple enough.
> > * ancient humans
> WE USED TO BEABLE TO PLANET SKIP?!
There's legends of ancient civilizations, Atlantis, Lemuria,
http://fringe.wikia.com/wiki/First_People Simple enough, they had a great civilization once and now it's gone, only their building on Mars remains because decay happens slower due to no surface life and no oxygen.