Through its Map Maker program, which crowdsources cartographic info, Google has published finer details of some North Korean roads. More notably, it has included shaded-in locations of the country's notorious prison camps. The data has flowed in from a few different sources, including defected North Korean expats now living in Seoul. Geographically-minded tourists and visitors of North Korea have weighed in, and historic map data from pre-partitioned Korea into has also been helpful. (Google maintains that the recent trip to Pyongyang by CEO Eric Schmidt had nothing to do with this project.)"
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