This hot spring recently became popular because of social media. It doesn't really have a name. This one I don't think you should skip. It's pretty awesome. It looks over the town of Akureyri and really is something else. You'll have to go through the tunnel when getting here, when they were digging the tunnel a few years ago, they hit a main natural water line (this river) and they redirected it to where it is now so they could finish the tunnel. Soon it will be made into another spa :(