Rauðibotn (Red Bottom) is a beautiful natural formation that shouldn’t be missing from your Icelandic bucket list.
If you are wondering where the water in the crater comes from, it comes from right here.

The site is only accessible by 4×4 car. Access is easier on the F210, there are no major fords.
On the F232 road, you have to cross the Hólmsá River, which is more difficult to ford, shortly before you reach the car park at Rauðibotn.