In the fjord arm Osa, it was previously planned to build hydropower plants. The project was never completed, but the large tunnels still remain, taking you far and deep into the mountains. On the guided tour, you will learn the fascinating story of the old and abandoned industrial adventure in Osa. The 100-year-old tunnels have several different shafts and tunnels, all with different levels, which you can walk in.
The tour includes a visit to the historic cafe inside the mountain, where you will be served coffee and pancakes. The tunnel is currently privately owned and can only be visited with a guide. The trip lasts a maximum of 1.5 hours and is suitable for all ages. Included in the price, B-Active will provide you with a helmet and torch. Bring warm, wind and waterproof clothing and waterproof shoes.