Freezing and thawing are processes that influence plant cover, move enormous blocks, stretche long mounds of earth, break open bedrock and create patterns in stone and earth.
At the bottom of the Osa fjord there is a cultural landscape marked by great contrasts; the wide terraces and the river delta at the fjord contrast with the steep hillsides in the background, where Norddalen leads up to the mountain. There are two farms here. Osa and Sævartveit – the farm at the river mouth and the hollow by the sea.
When the Etne water system was protected in 1994, preservation of the cultural landscape in Stordalen Valley was a a main objective. This is a valley with an exceptional abundance of Different types of plants and animals. In the grey alder forest in Stordalen there are more bird species than in most other places, in fact, denser than one tends to find in a tropical rainforest.
Fyksesundet and Botnagrenda present a fine experience of the landscape and cultural history; a geographically isolated local settlement with extensive cultural contact with the outside world.
The farm Nes lies directly inside Mundheim on a forested headland in the fjord between Mundheimsvika and Bondesundet, a farm with an attractive and well-kept cultural landscape.
The permanently-protected Mosneselva River, with its meltwater from Folgefonna, runs out into Åkra Fjord by the roadless and uninhabited Mosnes. Those who once lived here were forced to surrender to the ravages of Nature. In the autumn of 1962 there was a flood so great that the people were driven from their farms.