Is Oxygen available on the train?
Yes, the train is well pressurized for the plateau environment, but if you get a headache when crossing the mighty Thangula Ranges (5700m), the train has two main oxygen supplying systems. The whole cabin has an oxygen-releasing outlet and there are individual oxygen pipes right over your bed. Before the train reaches the high plateau, train attendants will distribute oxygen masks that you can use by connecting them to the outlets on your bed.
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