Vatnshellir Cave is a lava tube located on the Snæfellsnes Peninsula in Iceland, formed around 8,000 years ago during an eruption. This unique cave offers caving tours throughout the summer months, where visitors can explore its colorful mineral-rich walls and learn about Icelandic geology and folklore. With a staircase entrance and a length of 200 meters, Vatnshellir provides an exciting adventure for all ages, making it a must-visit site in the Snæfellsjökull National Park.