North Korea was a final frontier for Google Maps.
A two-picture series obtained January 29, 2013 courtesy of Google shows before (L) and after (R) images of North Korea on Google Maps. The collaboratively created map of North Korea now on display on Google offers a detailed layout of Pyongyang, showing hospitals, subway stops and schools.
It took years and the help of amateur map-makers who once lived there or knew people who did to add gulags, streets and other details to what was long a patch of gray on the online atlas.
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