Photos: Zooming in on the 'Face on Mars'

In 1976, one of the first images from the Viking 1 spacecraft showed a formation in the Cydonia region of Mars that NASA said "resembled a human face." NASA scientists quickly interpreted the image as having been caused the angle of the Sun and resulting shadows. But that didn't stop claims that the "Face on Mars" proved there was intelligent life on the Red Planet.

ESA's Mars Express equipped with it High Resolution Stero Camera recently revisted Mars most famous face.