Many mountain plants are well prepared to face cold and wind. Some would surely rather face an easier life in the lowlands, but they cannot compete with the higher-growing plants living there. Most mountain plants manage to compete for light and space only if they cling to the bedrock and gravel in the harsh high alpine climate.
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.