Open data published by Nasa was used to make the map, which has been posted on the OS Flickr account.
This is the first time that OS has produced a map of territory from another planet.
It has also been printed in a one-off edition for a British scientist helping to plan the landing of a rover on Mars in 2019.
"It was a little hard at first to actually understand the data itself in terms of things like the elevation and the scale and so on," said the OS cartographer behind the map, Chris Wesson.
"But actually the physical process was almost identical to what was used to make an Earth map, or any OS map."
The map itself covers roughly 10 million sq km (3.8 million sq miles) - or about 7% of the total Martian surface.
http://www.bbc.com/n...nology-35579849
