Police and rescue workers help after a passenger train derailed into a ravine near Tiefencastel in a mountainous region of southeastern Switzerland after encountering a mudslide on the tracks August 13, 2014. Several passengers were injured after at least three train carriages came off the tracks near Tiefencastel, a village less than 50 km (31 miles) northwest of the ski resort St. Moritz. (Photo by Kantonspolizei Graubunden/Reuters)
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