― Enjoying the weekend I had a walk along Akerselva in Oslo today. ∙ Walking along river Akerselva in Oslo, is something everyone visiting the town should do. As the river starts at lake Maridalen, that lies at much higher ground outside the city, there is numerous waterfalls along the route. One of these is "Brekkefossen," a 6 metre high waterfall. It was regulated many years ago when a hydropower plant was buildt to supply neighbouring industry and houses with electricity. .