The face is just a natural landform and it couldnt have been made by aliens for certain reasons and here is why. There were no living creatures to be found anywhere on mars. Even in the last paragraph it said it reminded Garvin of most of

Middle Butte in the Snake River Plain of Idaho.

"That's a lava dome that takes the form of an isolated mesa about the same height as the face on Mars." Garvin also said about the Face. Natural landforms are usually formed by Natural events. Probably the same thing that happened on Mars. When Mars Gloval Surveyor flew over Cydonia for the first time, it snaped a picture ten times sharper than the original viking pictures and all it revealed was a natural landform, no alien monument. Although some said that the alien markings might have been hidden by haze, there still was no alien markings to be found after the next picture they took on a cloudless summer day in Cydonia. It was the best 1976 Viking photo and still no sightings of life on Mars.

I do too think there might be forms of life or "aliens" on other planets but just maybe not Mars. After all, Mars is not completly suitiable for life to live on even though its called Earths twin. If we just do enough research, soon we just might find more interesting things to lead us to other forms of life on other planets.