The article discusses return of David Guttenfelder, former chief Asia photographer for the news agency "Associated Press," to North Korea where he worked for years. It mentions that Guttenfelder, on behalf of newspaper "The New York Times," covered the march of feminist leader Gloria Steinem and peace activists across the demilitarized zone in North Korea in May 2015. It adds that Guttenfelder photographed in Yellowstone National Park for the periodical "National Geographic" in mid-June 2015.