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![Great Expeditions](https://webarchive.library.unt.edu/web/20110722174343im_/http://channel.nationalgeographic.com/staticfiles/NGC/StaticFiles/Global/DL/Images/BP/110404-BP-IHT-greatexp-5019.jpg)
Great Expeditions
Historian William Lindesay journeys to some of the most remote places along the Great Wall of China.