APOD7

This is the Cydonia region on Mars. The picture was taken by the Mars Express Orbiter, a satellite orbiting Mars that determines the composition and structure of Mars' surface, sub-surface, and atmosphere. The image shows an area about 90 kilometers wide. When the sun hits this mesa from the correct angle, the famous face on Mars is visible. The features in the Cydonia region are the result of erosion and landslides.