Two passenger trains collided in the city of Shahroud November 28, 2016 by arshad SHAHROUD, NOV 25 :- People gather around two passenger trains that collided in the city of Shahroud, in the north-central province of Semnan, killing several people, in this still frame taken from video, November 25, 2016. REUTERS-12R People gather around two passenger trains that collided in the city of Shahroud, in the north-central province of Semnan, killing several people, in this still frame taken from video, November 25, 2016. REUTERS