If you journey along Austfjorden, you at the same time turn the pages of time back through Ice Age history. The landforms show how the landscape has developed gradually as the glaciers have grown - and melted again - in several episodes: from small cirques, we see innermost at Dyrdal, to larger fjords, like at Mas fjord further out.
Frøyset river network is protected from power station-building - not because of its pristine nature - but because it is a typical river network for this part of western Norway.
Early in the 1900s there were much larger salt water deltas in Hordaland. But, essentially all of the larger river deltas got filled in and regulated for use in industry during the last century. Now, there is only Haugsdals delta left.
As early as 1906 the Matre and Haugsdal waterway was bought up by the businessman Blauuw from Bergen; the first “waterfall speculator” in the Matre area. He immediately resold it to Fr. Hiorth, who transferred all the rights to the company Matrefaldene in 1908. Behind A/S Matrefaldene were German interests, Badische Anilin und Sodafabrik, which wanted to start production of saltpetre fertilizer with nitrogen and electricity.
Close to Hummelfossen (waterfall) there is a narrow path leading up the steep mountainside. The path leads to the farm Kringlebotnen, which lies in the mountain, east of the Stormatre valley.