If I understand the claim correctly, the images linked here:

The 'faces' Of Mars!!

are supposed to represent separate "faces" aside from the well-known one. If this is the case, they seem to have extremely similar lighting and imaging angle. each one showing only about half the "face."

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Disclaimer: Avatar is not an official NASA image and does not imply any specific interplanetary or interstellar capability.

The Leif Ericson Cruiser