Britain's Ordnance Survey said it was able to illustrate the Martian landscape with such detail thanks to open data from NASA. The map covers 3672x2721km (2282x1691 miles) of land on the plane's Western Arabia Terra region (about 7% of Mars's total surface) and as you can imagine, the full size version is enormous. In a blog post, OS said the map was created to see if could be useful for future space missions to Mars and even includes the landing sites of the Pathfinder and Opportunity rovers.
Hell, maybe someday it'll be folded up in the glovebox of your Martian off-roader.
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