text: One reason that proves that the Face is natural is that there has never been any alien interaction evidence on any planet. First of all,it is not possible for aliens to create a face in cement rock. Next,aliens wouldn't know what a face would look like because they wouldn't have a mirror and they wouldn't even know what they look like. Finally,if aliens were able to move rock,they wouldn't have any tools to use. Aliens couldn't have formed the Face if we don't even know if they exist.