The steam engines of UNESCO World Heritage Site Darjeeling Himalayan Railway ''toy train''-s at the Darjeeling loco shed preparing for the early morning haul in Darjeeling, West Bengal, India on 11/06/2022. It is also considered to be the world's 22nd highest railway. Darjeeling Himalayan Railways may conduct up to 20 train rides. The trains are pulled by old-style coal-fired engines. Coal ashes fly there all the time, and Locomotive Mechanics are working all day in this polluted air.