In this June 20, 2014 photo, North Korean residents walk on a road along a river in the town of Kimchaek, in North Korea's North Hamgyong province. The once-productive cities along its east coast, like the coal mining town of Kilju and the nearby city of Kimchaek – built around a sprawling but now eerily quiet ironworks complex – have become a rust belt, gritty and relentlessly gray. (Photo by David Guttenfelder/AP Photo)
