Flåmselvi or Moldåni is a 40-kilometre (25 mi) long river in Norway. The river begins as runoff from the Omnsbreen glacier about 5 kilometres (3.1 mi) northwest of Finse in the municipality of Ulvik in Hordaland county. The river is known as the Moldåni river in this area. It then flows through a series of lakes heading to the northwest where it crosses into Aurland municipality in Sogn og Fjordane county. The Bergensbanen railway line follows the river to Myrdal. At Myrdal, the river goes over the Kjosfossen waterfall and it follows Flåmsdalen and heads to the north. When it reaches the village of Flåm, it empties into Aurlandsfjorden, a branch off the main Sognefjorden (Norway's longest fjord).