Askja

Just when you’ve had enough of hot springs, along comes the realization that you can soak in hot water at the bottom of a volcanic crater. Askja is an out-of-this-world volcanic caldera, located deep in the northern highlands. One crater has filled with a milky blue water, and the temperature is perfect for a cheeky dip. Tackle the rough mountain roads in a 4×4 or let an expert do the driving.