There are probably few cities in the world that have a river running through its districts. Let alone a river where people can go fishing and catch a salmon. But in Reykjavík the capital of Iceland you will find a river running through a beautiful valley Elliðarárdalur. The river has its origin in the two square kilometer lake Elliðavatn. The lake is quite shallow as most of it is only 1 meter in depth. The valley is a great place to take two to three hours to hike.