The dormant Þríhljúkagígur volcano is a unique natural phenomenon.
All you need is the willingness to do a moderate 45–50 minute hike (to get to the crater) and the guts to descend 120 meters/400 feet to the bottom of the crater in an open cable lift.
The Inside the Volcano cave tour can be added on the following tours:
This is: The Golden Circle
This is: The South Shore
This is: The South Shore in Two Days
- This is: The Reykjanes Peninsula