No! The Face found on Mars is not formed by aliens. The Face found on Mars was just a natural landform. Landforms like the Face are found very commonly, but not all landforms found are exactly like the Face. In the next paragraph I will give you some reasons why the Face wasn't formed by aliens.

The Face found on Mars was just a natural landform. In the passage it says, when Michael Malin took pictures 10 times sharper, with his Mars Orbiter Camera, the image revealed just a natural landform. If you take a look in paragraph 2 it states that mesa, or landforms, are commonly found around Mars. Also, the Face has equivalence to landforms found around the American West. Garvin says that it reminded him of Middle Butte in thge Snake River 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 goes on to say.

The Face found on Mars was just a natural landform. The Face was not formed by aliens. Landforms such as the Face are commonly found. Information in the passage supports that the Face is just a natural landform.