is an aerial tramway
, and was the first of its kind in Northern Europe
. It was built in 1928 as a gift from Norsk Hydro
to the people of Rjukan
(most of them Hydro employees), offering them a view of the the sun which is obscured by the surrounding mountains during the winter months from October to March.
The horizontal distance between the lower and the upper station is 814 meters and the difference in altitude is 495 meters, which yields an average incline of 0.6: 1 (in other words, it climbs 60 centimeter for each meter traveled).