The river, which is called the Eitro here, then runs southeast through Sildabudalen, a wide valley, and into Langavatnet, a lake at an elevation of 1,223 meters (4,012 ft).

When it flows out of Tinnhølen the river is now named Bjoreio, and it runs to the northwest out of the national park and down through the Bjorei Valley (Bjoreidalen).

At Fossli the river creates 182-meter (597 ft) high Vøring Falls, where it hurtles down into the narrow and deep Måbø Valley.

The river's flow has been diverted through a tunnel to the lake and, together with the upper course of the Isdølo, the water is then directed to the power station below Kjeåsen on the north side of the Simadal Fjord.

The river bed below the Sysen Dam is dry for most of the year, but during the summer season it is required to release water so that the flow at Vøring Falls is at least 12 cubic meters per second (420 cu ft/s).