Fellsfoss is a waterfall on the river Fellsá, which is well visible from Hringvegur, but few people venture all the way to it. A small unpaved road goes several hundred meters from Hringvegur, from where you then set off on foot to the waterfall. On the way, you need to cross the river Mjósunðaá, where there are large stones that allow you to hop across without having to wade through.
