March 17th, 2017 
Ancient Colony 
FOOTPRINT DISCOVERED ON MARS?
The official explanation is given in a NASA caption stating that “soil disturbed by the left front wheel of the Spirit rover evokes impressions of the first footprint on Mars.”
Source: https://www.nasa.gov/externalflash/Mars_as_art/hi-resjpgs/44.jpg
footprint on mars
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