Excursion with a guide to the roughest part of Hardangervidda. Spectacular journey through Austdalen, with breath-taking views and waterfalls to “Langevatn” a reservoir lake at alt. 1,200m, with a view on Hardanger Jøkulen, a large glacier. The guide tells the fascinating history of 100 years of "energy" in Osa. On the way back down, we visit the breathtaking waterfall “Roykafossen. Then we go to the historic, 100y old "Kafeen" for a pancake lunch. After lunch the tour continues to the tunnels of Osa. A historical view on the epic plan to turn Osa into a city for 6,000 people, develop a railway and metal industry. A telling of the extraordinary story of Fossekompani, who, in 1912, started the construction of a hydroelectric power plant. In the roughest area of Hardangervidda, under harsh conditions, many kilometers of tunnels were constructed, including a vertical shaft of nearly 1 km inside the mountain. After bankruptcy in 1923, the project was halted, and then resumed during WW II under German occupation, but abandoned again within 2 years. Ultimately, none of the many projects were completed. Experience the extraordinary story of likely the largest industrial archaeological site in Norway. Food & drinks Lunch: Pancakes with homemade marmalades (dandelion, pine tree…) + coffee/tea Included Guide * transport with our own bus from Ulvik-Osa and back * Road tax * helmet Difficulty level & safety This tour is intended for all age groups. No special requirements are expected. Young children from age 5 can participate, if accompanied by parents. What to wear Shoes or boots suitable for shallow pools A warm jacket or sweater (temperature in the tunnels about 7 ° C year-round) Note: in Hardangervidda, the temperature is always about 10°C colder than Fjord-level.