We hear a lot about this recently, some pictures are here http://www.guardian.co.uk/news/gallery/2007/jul/18/china.pollution?pictu.... Will be interesting to see, or will I run away choking?
http://travel.nytimes.com/2007/07/15/travel/15wuling.html
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Wulingyuan
http://travel.nytimes.com/2007/07/15/travel/15wuling.html