Stock Video - Tannforsen. Sweden. Tannforsen is a spectacular 12-meter waterfall in Härjedalen Municipality, Jämtland County, Sweden. It is situated on a 520-square-kilometer nature reserve of the same name, the largest in Northern Europe. The reserve is a popular destination for nature enthusiasts, and it offers a variety of activities, such as fishing, hiking, and bird watching. The Tannforsen Nature Reserve is home to a vast variety of flora and fauna, including 14 protected plants and several threatened birds. The area consists of several jagged mountains, swamps, lakes, and vast forests with vivid and colorful landscapes. The Tannforsen waterfall is the leading natural attraction of the reserve, and it is easily accessible from the various trails that lead to it.