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Thrihnukagigur Volcano
Thrihnukagigur Volcano

Thrihnukagigur Volcano

Reykjavik

The Basics

Thrihnukagigur is a relatively new sightseeing destination. It was only discovered, by an Icelandic cave explorer, in the 1970s and opened up to tourists in 2012. Travelers can experience it by booking a guided tour. It’s about a half-hour south of Reykjavik and tours typically begin with a 2-mile (3-kilometer) hike to the volcano across a lava field. Visitors then board an open elevator for a 6-minute journey that descends 700 feet (213 meters) into the magma chamber. There you are free to explore the dormant volcano's cave floor, its vividly colored rocks, and frozen magma icicles, for usually around 35 to 40 minutes. After returning to the surface, visitors are typically rewarded for their efforts with a bowl of traditional Icelandic meat soup.

Tours involve a moderate amount of walking but helicopter tours are available for those unable to do the hike.

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Recent reviews from experiences in Reykjavik

star-5
Wow!
Michaelverdu, Aug 2021
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
Incredibly fun day! And what an adventure to be lowered into the throat of a dormant volcano. Very unique experience. Guides were helpful, knowledgeable, safety conscious, and to a person had a wicked and delightful sense of humor. Highly recommended.
star-4
Great Day
DanielFisher, Aug 2021
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
Inside the volcano viator agent lied to me about the pick up time, it was 7:30 and not 9:30! luckily Gray Line iceland had a free spot and they rescheduled my time to 12. Yohan was my guide and he was terrific ! i loved listening what he had to say with a huge sense of humor! gigsle was amazing as well! we eat lamb soup which was really good and enjoy a unique experience!
star-5
Very interesting
LawrenceB1263, Sep 2019
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
Tour was great fun and educational. Recommend checking out National Geographic UTube on this volcano. Would also note site is quite a bit higher than Reykjavik so it's colder, windy and frequently wet. Dress accordingly, especially in non summer months.
star-5
Inside the volcano
Companion02689187352, Nov 2018
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
Excellent trip. Very surreal to be inside a volcano looking up! The hike there took about an hour I guess. The lift down and up was brilliant. It felt safe and the views were fantastic. The guides were superb and knowledgeable. The equipment was all in good order. Great soup at base amp too!We’ll organised and delivered trip. My wife , son and I loved it!Thank you.
star-5
To the centre of the earth!
Jonathan_S, Aug 2020
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
This is a once in a life time experience! If you don't do anything else in Iceland (but of course you will) this trip has to be top of the list. The trip down into the volcano takes longer than expected and one can study the different formations and colours whilst descending in the basket. Once inside the space is cavernous and colourful. High above is the tiny entrance - make sure you have plenty of memory in camera. Alexia and her team of guides are friendly, helpful and very knowledgeable.
star-4
An Experience To Remember
Lisa B, Aug 2018
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
it's not everyday you get the chance to hike a couple of miles to the cone of a volcano, and then get harnessed and lowered 450 feet into the magma chamber. This was a truly memorable experience, a little physically challenging (i.e. uphill, breathing hard), but well worth the effort. The crew at base camp were super friendly and served a delicious lamb stew, outfitted us with top notch gear and basically keep us safe. We had a beautiful sunny day for the hike! I'd highly recommend this excursion to anyone looking for something different, a little physical and a lot of fun.
star-5
A truly unique experience - I dont know...
Richard_G, Sep 2018
Inside the Volcano: Small Group Thrihnukagigur Hike and Tour from Reykjavik
A truly unique experience - I dont know of anywhere else in the world where you can do this. Why would you miss out?! Tour consists of a drive out to a hut at the foot of the ski slopes where you are offered an extra waterproof layer before your 3km hike across the lava field to the base camp at the base of the crater cone. Here you are offered refreshment, given instruction, split into groups of 6 and given helmet and harness before being escorted up the crater wall to the lift at the shaft opening. Enjoy the ride! 30 mins is spent at the bottom before your return trip. You are told about the history of the volcano and its formation with some explanation of the features that you see around you. It is truly impressive. Back at base camp you are offered a warming bowl of soup before your hike back to the ski slopes and back to Reykjavik. The trip is organised professionally, you are kept well informed, given clear instructions and I felt safe at all times.

Things to Know Before You Go

  • Be sure to wear good hiking shoes that you don’t mind getting dirty.

  • Wearing a warm jacket and outdoor clothing is strongly recommended as it is usually very cold inside the crater.

  • Thrihnukagigur is a must-see attraction for geology enthusiasts and nature lovers.

  • There is a cozy “base camp” by the volcano with restrooms, coffee/tea, a souvenir shop, and Wi-Fi.

  • Tours involve a moderate amount of walking but helicopter tours are available for those unable to do the hike.

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How to Get There

Thrihnukagigur is in southwest Iceland, about a 30-minute drive from Reykjavik, via the Golden Circle or Ring Road, or a 50-minute drive from Keflavik International Airport. There is no public transport to the site. You can skip the hassle of driving by booking with a tour that includes pickup and drop-off from Reykjavik hotels.

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Trip ideas


When to Get There

Tours usually only run during the spring and summer months and take place during the day—check with the operators to confirm. If you want a more personal experience, you can book a private tour, which typically run in the early mornings. Iceland’s long summer days and short nights make getting up early a breeze.

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Go Inside Thrihnukagigur Volcano

Iceland is the only place in the world where you can venture inside a volcano’s magma chamber. Thrihnukagigur is easily accessible from Reykjavik and makes for a straightforward day trip, especially if you book a tour that includes round-trip transport.

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