Otterstadstølen lies in an idyllic grassy plain surrounded by rich forest, but also with high mountains close by. The mountainsides are steep and typical of this part of the county. The same cannot be said about the forest. This spruce forest has been able to develop freely for hundreds of years. Otherwise in the county, only Voss has spruce forest.
On Storsøya Island, English ivy grows nearly everywhere. It creeps along the ground and climbs all the way to the top of the tree trunks. Together with holly, the trees of juniper, yew and an unusual pine forest keep the island green the whole year 'round.