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Thrihnukagigur Volcano Tour | Go Inside a Magma Chamber

Thrihnukagigur Volcano Tour | Go Inside a Magma Chamber
Þríhnúkagígur is the only magma chamber in the world that you can descend into.
The scale of this magma chamber is awe-inspiring.
The colours of Þríhnúkagígur exist due to the deposits from elements of the earth.
A lift descends into Þríhnúkagígur.
Þríhnúkagígur has been dormant a long time, making this tour perfectly safe.
Þríhnúkagígur magma chamber is one of Iceland's most unique places.
Based on 221 traveller reviews

Descend into the vast and vibrant magma chamber of a dormant volcano. Iceland is the only place in the world where a tour like this exists, so do not miss your opportunity.

This trip will begin when you are picked up from Reykjavík and taken to the Blue Mountains Country Park, Bláfjöll, which sits just on the outskirts of the capital area. From here, it is just a 3.2 kilometre (two mile) hike to Þríhnúkagígur volcano, where you will descend into the volcano itself.

Once you reach the crater, you will find an opening and an elevator crane. After being equipped with a helmet and harness, you will enter the lift's basket and begin your descent. Nowhere else in the world can you enter a magma chamber this way, which is part of what makes this tour so unique and worthwhile. This lift journey toward the centre of the earth covers 198 metres and takes about six minutes.

During your slow descent, the beauty of the magma chamber will become instantly apparent. Intense heat and pressure from Þríhnúkagígur’s most recent eruption, over four thousand years ago, gave the rocks an incredible colouration and texture. Expect to see smooth walls and bizarre formations in yellows, blues, reds, violets and oranges, so vibrant that it’s difficult to believe that they could be natural.

It is not just the beauty of the space that will awe you; it is also the sheer scale of it. To give some perspective on the size of the chamber, enormous monuments such as the Statue of Liberty and Reykjavík’s iconic Hallgrímskirkja church could easily fit inside it. The ground within the chamber is large enough to fit three basketball fields. 

Once your descent down the chamber is complete, your guide will let you out of the elevator, and you can explore for half an hour on the ground of the volcano. You will want your camera on hand, as everything, from the blades of light falling from overhead to the most minute details of the lava rock, is worthy of a photograph. 

Remember as you explore that it is only by a strange, unexpected geological process that this tour is even possible; when a volcano becomes dormant, the magma chamber usually cools and solidifies, yet for some reason in Þríhnúkagígur, it drained away, leaving behind this unimaginably beautiful space.

After your exploration, you will return to the elevator for a gentle ascent, back into the bright, open world. Once you reach the surface, you will have a meal of Icelandic meat soup waiting for you, along with hot beverages and snacks, which you can enjoy before hiking back to the van.

This experience is truly once-in-a-lifetime; descend into a dormant volcano to explore its stunning magma chamber. Do not let this opportunity pass you by. Check availability by choosing a date.

Quick facts

Tour information:
  • Available: Oct. - Dec.
  • Duration: 6 hours
  • Activities: Caving
  • Difficulty: Moderate
  • Minimum age: 12 years.
  • Languages: English
  • Highlights: Reykjavík, Bláfjöll, Þríhnúkagígur, South Coast
Pickup information:
  • Pickup time : 07:30. 08:30, 09:30, 11:30, 13:30,

Pickup starts at 30 minutes before the set departure time (for example 07:30 for the tour at 08:00). Please be ready outside the lobby (or at the bus stop assigned to your hotel). Note that pickup is operated by Gray line, so please keep an eye out for a bus from them.

  • Pick-up from and return to your accommodation in Reykjavik

  • All safety gear (helmets, harness, etc.)

  • Small refreshments (soup, coffee/tea and perhaps some sweets)

  • Experienced guides

What to bring:
  • Sturdy shoes for walking/hiking

  • Water

  • Warm clothing and outerwear suited to rainy or chilly weather (The temperature inside the crater is about 5-6°C / 42-43°F)

  • Camera

Good to know:

The weather changes quickly in Iceland, so don't be caught unawares. It is a good idea to bring a sweater or dress in layers which you can remove if you get too warm. Jeans are not recommended for this activity, as moisture quickly spreads through denim fabric and takes a long time to dry, leaving the wearer wet and cold.

Be aware that this tour begins with a hike that is nearly an hour-long, largely uphill, and over rough terrain, thus the trip is not recommended to those with problems in their ankles, knees, back, or other similar ailments.



Verified reviews

Average4.8221 reviews
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Excellent trip!
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Our guide Thur was amazing, she explained everything before leaving and made it clear on what to expect in the hike to and from the volcano. The managers of base camp Jonas and Brindie were very helpful in setting everyone up with harness and helmets for the descent into the volcano, and offering a delicious lamb soup when we came back. The weather was harsh, very windy, I recommend you have a windproof jacket , something to cover your face and don’t forget to bring your glasses or sunglasses, it would’ve been great not having the wind in my eyes!
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This was one of the highlights of our trip to Iceland! I can’t recommend it highly enough!
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Our guide Jonas was exceptional and very informative. A wealth of knowledge and happy to answer any questions. The weather was nice and sunny and the scenery was amazing. The soup provided at base camp was warm and tasty, very welcome on a cold day. The pickup from near the hotel worked very well. A fantastic experience all round.
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Friendly guides, delicious lamb soup, and the chamber is very spectacular and beautiful. Amazing trip!
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The trip into the volcano was amazing! Although I am afraid of heights it was doable and I felt safe during the way up and down. It is definitely an experience one shouldn’t miss when traveling through Iceland!
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The tour is fun, well informed and well equipped. very safe and Interesting. only takes 5-6 hours including transport so pretty good to plan your trip around. the lamp soup is amazing.
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The walk from the meeting point to the base camp was a little longer than expected and was at a hurried pace. However, that is nit-picking an overall amazing tour and views inside the volcano. I would definitely recommend this tour.
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This was our first tour of our driving Iceland tour. It was most helpful the tour organizer emailed us the day prior with a reminder and directions on how to get to our meeting point. Our guides were very friendly and knowledgeable. A tour like nothing we have encountered before and loved every minute. The lamb soup was a welcome addition. Thanks so much.
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Firstly we are picked up from the hotel by greyline and then we change to a black shuttle bus to the volcano. After meeting with the tour guide, we had about half an hour easy walk to the base camp and then waiting at the base camp. We are divided into 3 groups (6 persons per group due to lift limit). Every group had half an hour inside the vocalno, which means, we have to wait for one hour at the base camp when other groups are inside the volcano. Then we have half an hour walk back to take the shuttle bus back to Reykjavík. The whole journey tooks about 6 hrs (from pick up time to arrival at the pick up point) but actually only half an hour inside the volcano. Though the service at base camp is good, I think it is too expensive and it is time-wasting. If you have limited time or budget, I am not recommended for this tour.
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