 At Myrdal Station , the Flåm Line runs in the same direction as the trains towards Oslo , but immediately starts running downwards into the Flåmsdalen valley . The first part of the line runs through snow shelters and several short tunnels . Vatnahalsen Station is located 1 @.@ 13 kilometers ( 0 @.@ 70 mi ) from Myrdal , at 811 meters ( 2 @,@ 661 ft ) AMSL . The line then runs through a horseshoe curve and the 880 @-@ meter @-@ long ( 2 @,@ 890 ft ) Vatnahalsen Tunnel . It exits the tunnel onto an artificial shelf on a cliff which falls several hundred meters down . Reinunga Station is located 2 @.@ 20 kilometers ( 1 @.@ 37 mi ) from Myrdal and at 767 meters ( 2 @,@ 516 ft ) elevation . It is followed by Kjosfossen Station , 4 @.@ 40 kilometers ( 2 @.@ 73 mi ) from Myrdal and 670 meters ( 2 @,@ 200 ft ) AMSL , which serves no other purpose than allowing tourists to look at the waterfall Kjosfossen . 
