Hverfjall Crater, located east of Lake Mývatn in northern Iceland, is one of the largest and most impressive volcanic explosion craters in the world.
Rising over 400 meters (1300 feet) above the surrounding landscape and spanning about 1 kilometer (0.6 miles) in diameter, its nearly perfect circular shape resembles a vast natural stadium. Created by a tephra explosion around 2,500 years ago, Hverfjall’s steep, black ash slopes and massive rim make it an unforgettable sight for visitors exploring the Mývatn region.
Hikers can ascend to the rim via marked trails, which offer panoramic views inside the crater as well as across Lake Mývatn, the Dimmuborgir lava fields, and the volcanic mountains nearby.
The walk around the crater rim can be completed in about an hour, rewarding visitors with striking lunar-like landscapes unlike anywhere else in Iceland.
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Scenic beauty
Hverfjall’s stark black ash walls contrast dramatically with the green vegetation of Lake Mývatn in summer or snow in winter. The sheer size and symmetry of the crater, combined with expansive views of the volcanic landscapes, create a truly otherworldly experience.
Accessibility
Hverfjall is easily accessible by car from Route 848, with clear signage and a designated parking area at the base. The gravel path to the crater rim is short but steep, taking most visitors around 20 minutes to climb. Trails are safe for both adults and children, though sturdy footwear is recommended for the loose ash and rocks.
Cost
Parking at Hverfjall currently costs 1,086 ISK (approx 8 EUR/USD) per vehicle as of 2025, which includes access to restrooms and supports site maintenance. There is no entry fee for hiking up to or around the crater.
Crowd level
As one of the most popular attractions in northern Iceland, Hverfjall can get busy during the summer, especially midday when tour buses arrive. Early morning or late afternoon visits offer a quieter, more peaceful experience, with plenty of space to explore the crater’s rim and enjoy the dramatic vistas.