Thrihnukagigur Volcano Descent & Hike

From€471
6 hours
Reykjavik, Iceland

About this activity

Descend into Thrihnukagigur volcano's magma chamber and hike through Iceland's unique lava fields on this guided tour from Reykjavik.

Highlights

  • Explore the world's only accessible magma chamber
  • Marvel at vibrant mineral colors inside the volcano
  • Hike across unique lava fields
  • Learn about volcanic geology from expert guides
  • Capture stunning photos of Icelandic landscapes

Full description

Experience the thrill of descending into the heart of a dormant volcano on this unique tour from Reykjavik. Accompanied by expert guides, you'll explore the Thrihnukagigur volcano, renowned for its accessible magma chamber. As you descend, witness the vibrant mineral colors that adorn the chamber's walls, offering a surreal and unforgettable sight. After the descent, embark on a hike through Iceland's distinctive lava fields, where you'll learn about the region's volcanic geology and capture breathtaking photos of the rugged terrain. This adventure provides a rare opportunity to delve deep into Iceland's geological wonders, combining exploration, education, and natural beauty in one unforgettable experience.

Included / Excluded

  • Guided descent into Thrihnukagigur volcano
  • Hike through lava fields
  • Round-trip transportation from Reykjavik
  • Meals and beverages

Meeting point

Start Location

Unknown location

Important information

Know before you book

  • Tour operates in English; ensure you understand the language.
  • Children under 12 years old are not permitted on this tour.
  • The tour is subject to weather conditions; check forecasts before booking.

Know before you go

  • Wear sturdy hiking boots suitable for uneven terrain.
  • Dress in layers to accommodate varying temperatures.
  • Bring a camera to capture the stunning landscapes.

Cancellation policy

Free cancellation up to 1 days before the activity starts

For a full refund, cancel at least 24 hours before the scheduled departure time.

Good to know

  • Wear warm and waterproof clothing, as well as hiking boots. Sneakers and jeans are not appropriate.
  • Minimum age is 8 years
  • Be aware that this tour includes a total of 7 km hike across an uneven mountain terrain in unpredictable weather conditions. No hiking experience is needed, but this does require moderate fitness levels.

Traveler reviews

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Unique experience

The four mile trek to and from starting point could be challenge for senior citizens specially the steep climb to the top of the volcano. We strongly recommend they prepare well for the trip. The trip worth every penny for this unique opportunity to experience getting deep into the volcano. The staff at the camp are helpful and made the trip possible and enjoyable

Sudhakar_NSep 27, 2026VIATOR

More strenuous than expected. But amazingly beautiful.

This was an incredible experience, but was a much harder hike than we had expected. I counted 16000 and rather than a flat trail there was a lot of up and downs. The last bit is very steep. If you're in good shape, this should not be a problem. I'm surprised they had no accomodation for anyone with a handicap. They did mention that one woman had hired a helicopter to take her to the volcano.

Rande_LAug 23, 2026VIATOR

Need to be fairly fit....

I may have missed this detail....it is a 45 minute hike to the Base Camp and back on somewhat uneven ground. VERY INTERESTING. More 'rustic' than cave tours in the States.

GeneBazanAug 12, 2026VIATOR

inside the volcano

weather was horrendous (cold, windy and rainy), but otherwise an incredible trip. Very unique, a lot of walking in the rain, but otherwise very worthwhile.

douglassB4041QMAug 9, 2026TRIPADVISOR

Despite having Pickup issues this was an amazing tour!

Excellent tour, the hike was a good distance which we enjoyed and it was a nice easy hike, the experience inside the volcano was amazing and quite unique. Our tour guide was wonderful and provided knowledge to us about the surrounding area as well as within the volcano. 2 complaints, for over $545, they should have picked us up in a minibus and directly taken us to volcano base camp starting point rather then picking us up in a large bus! The large bus then took us to the bus station where we were transferred to a more personal minibus which took us to the base camp starting point. Secondly, the tour was advertised to start at 8 AM. However, the day before the tour, we get an email telling us we need to be outside our cruise ship at 7:30 AM, for the 10 minute ride to the bus station where we were transferred to the minibus. We arrived at the bus pickup spot at the cruise terminal at 7:45 with 2 other groups and the driver of the large bus was rude to us and told us we were late. Despite his comment, we were in the minibus exactly at 8 AM for the start of the tour. In fact, there is no rush to start exactly at 8 AM, as we were back in town by 1:45 PM for an advertised 6-hour tour. The driver of the minibus did offer to the travelers.to drop people off in town which we took advantage of since we had limited time to see the highlights of Reykjavik.

K52DTrobertmJul 28, 2026TRIPADVISOR

Additional information

Wear warm and waterproof clothing, as well as hiking boots. Sneakers and jeans are not appropriate. Minimum age is 8 years Be aware that this tour includes a total of 7 km hike across an uneven mountain terrain in unpredictable weather conditions. No hiking experience is needed, but this does require moderate fitness levels.