The face of Mars could not be created by aliens. It is a land form created by the conditions of mars and looks like a face only by coincidence. Mesa's are common in this area of Mars and there are many others like this one just without the same shadows which makes the appearance of a human's face.

Out of so many different land forms in Cydonia why should this be any different. In the second paragrapgh of the article, it stated that the Cydonia region is known for its buttes and mesas. The face of Mars is just another mesa no different that any other one except for its unique shadows. It is strange to see a formation on an supposedly uninhabited planet that depicts a "human" face. Espescially when no human has ever set foot on the planet of Mars before. But at the same time, that is all the more reason to believe that this is nothing more that a weird coincidence since no person has ever been there.

To conspiracy theorists dismay, this strange landform is nothing more than martian butte or mesa and a weird coincidence. It is an interesting formation that stumped and puzzled scientests all over the world. But we now know the formation is not anything that will reveal alien lifeforms or alien activity.