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Photo: SRS scandiline, CC BY-SA 2.5 via Wikimedia Commons
The 16-km-long railway was operational between 1927 and 1991. In Mæl cargo (consisting mainly of chemicals produced in Hydro's fertilizer plant) was loaded onto ferries for transport across the lake to Tinnoset. In 1944 a steam ferry Hydro was sunk on the way from Mæl (as a part of Norwegian heavy water sabotage) with a cargo of heavy water for Nazi nuclear weapon project.
The Rjukan Line, at first called the Vestfjorddal Line, was a 16-kilometre (10 mi) Norwegian railway line running through Vestfjorddalen between Mæl and Rjukan in Telemark county. The railway's main purpose was to transport chemicals from Norsk Hydro's plant at Rjukan to the port at Skien, in addition to passenger transport. At Mæl the wagons were shipped 30 kilometres (19 mi) on the Tinnsjø railway ferry to Tinnoset where they connected to the Tinnoset Line. The Rjukan Line and the ferries were operated by Norsk Transport, a subsidiary of Norsk Hydro.
© OpenStreetMap contributors
Has a vast collection of old houses, and old things. Showing how life was in the rural parts of Tinn and in old times, before the town Rjukan was established. Open-air museum with no attendants.
Gaustatoppen
Highest summit south of Hardangervidda and highest in Telemark, a distinct profile. About 1/6th of Norway can be seen on clear days. 30,000-40,000 people hike to the summit every year, taking approximately 2-3 hours from Stavsro, where you can park the car. You can also take the Gaustabanen Cable Car inside the mountain.
Norsk Industriarbeidermuseum
Situated in the Vemork hydroelectric plant, on the very grounds of the Heavy Water Sabotage during World War II, Vemork has several exhibitions about the local history of the industrial worker as well as war exhibitions.