text: Formations are a very common thing, both on Earth and on Mars. It is nothing strange, what is strange is that it looks like a head. But even at the picture was taken in 1976 with a much lower quality of camera so things wouldn't have looked as clear as a more modern camera, the other picture was taken in 2001, technology would have advanced and improved much in that time span as it was 25 years later. The quality would have improved so it would have been much easier to see and to know what it really was, it was just a coincidence and coincidences are just as common as land formations.