Reykjadalur is a beautiful valley with a hot river running through it where you can bathe year round. There are no facilities so you need to be ready to change in front of people and such. When you are oké with that you just follow the marked path for 45 minutes or so and find a good spot to bathe in. be aware, the river is hotter in some places than other so make sure you check the water before you dive in. It is possible to walk a bit to the left or right of the 'main area'.
Be very careful if you go here and follow the marked paths as there have been bad accidents here in the recent years where people get badly burned when they go off the paths (there is hot water everywhere and the ground is sometimes unstable).
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