Lower Långan is a typical wilderness water - about 30 km down to the outlet of the Indalsälven - with varying lakes and calmer lots. The area is rated as valuable by national interest. In the forests around Långan there is one of the world's densest catchment systems. The valley has been inhabited by hunters and fishermen since the Stone Age, as shown by remains in the area. Today, there is almost no settlement along the more than 30 km long river stretch.

The river is relatively shallow and flows over lime-rich areas, making it a very productive watercourse with high biodiversity. The river provides opportunities for varied fishing - The långan has a varying character with different pools and runs. Here are natural opportunities for fly fishing. Långan is a primary tributary to the Indalsälven with the sources of western Jämtlandsfjällen.