NASA’s Viking 1 orbiter photographed this region in the northern latitudes of Mars on July 25, 1976, while searching for a landing site for the Viking 2 lander. The image shows a mesa that resembles a human face (centre), which helped to spawn a cottage industry of pseudoscientific claims about ancient Martian civilisations. Further high-resolution images from later missions revealed it to be a naturally eroded landform.
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