Oddadalen is graced with dozens of waterfalls, several of them are among the more well known and famous waterfalls in Norway – and rightly so - but Tjørnadalsfossen dwarfs them all. Fed by one good sized lake and dozens of smaller ones, the Stølselvi produces a large volume of water and crashes from a high valley into Oddadalen in a mammoth stepped waterfall dropping a total of 1,657 feet (505m). Viewing the falls from below it appears to be broken up into multiple steps, but if viewing the falls from the opposite side of the valley, it becomes clear that it is, in fact, a single consistent waterfall which isn’t broken up by pools or defined ledges. Though it isn’t a vertical waterfall, this makes Tjørnadalsfossen one of the tallest single-tier waterfalls in Europe.

https://www.worldwaterfalldatabase.com/waterfall/Tjornadalsfossen-543