outdoor view of metalllic structure protection close to water reservoir, with light lamps located at one side of the

artificial barren barrier bow c3b8yer cascade clean climate cloud concrete current dam ecological electric electrical electricity energy environment environmental europe falls fell filled flow force freshwater full generating generator gudbrandsdal gudbrandsdalslagen hardangervidda heap highland hill hillside hunderfossen hydro hydroelectric ice lake manmade mist mound mountain mountainous nature nordic norway overcast