On a beautiful summer morning, one of the world's longest-journey trains Chinese National Railway's K4 "The Trans-Siberian Express" train leaves the Mongolian capital Ulaanbaatar and passes on a bridge over the Tuul River. In addition, after the pandemic years since March 2020, these international express trains are still not back in service up to now. Join & Inquire about Mongolian railfanning tours: monrailpic@gmail.com
