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Underworld - Lava Caving Tour

Step into this Hidden Lava Cave on this exciting Day Tour

Go explore the lava tunnel underworld of Iceland

Feel the rush of adventure as one of the longest lava tubes in Iceland unfolds in the beam of your headlamp!

4.5 rating based on 12 ratings

Want to do this trip for free? Tag us @arcticadventures on your social media stories and photos during your trip and enter a chance to win a full refund. The winner will be picked once a month!

Join us on a half-day lava caving tour just 30 minutes from Reykjavík. We explore Raufarhólshellir lava tube cave, It’s a great option for the whole family! Lava tubing is a fantastic way to explore Iceland from a different point of view and all of the curious shapes in the cave. 

  • Availability

    All year

  • Duration

    1 or 3 hours

  • Duration Overwrite

  • Level


  • Pickup


  • Meet on location


  • Min. Age

    6 years

  • Ratio


  • Departs from

    Reykjavik / Raufarholshellir

  • Departs from Overwrite

  • Price from

    6.990 ISK

Tour highlights
A Scenic drive through a lava field
Visit to a Lava Tube Cave
Pick-up & drop off from Reykjavík
A Certified Caving Guide
All Required Safety Equipment
Helmet & Head Torch
Free WiFi on Board Your Bus

Iceland is known for its volcanic activity across the country. This is your chance to explore the fascinating subterranean landscape beneath the lava fields. 

Raufarhólshellir is one of the longest and best-known lava tubes in Iceland. This is a great opportunity to see the path of an ancient volcanic eruption. The Leitahraun eruption carved out the landscape around 5200 years ago. Every winter, wondrous icicles appear at the mouth of the cave. 

The tunnel stretches about 4500 ft (1360 m), 30 m wide with headroom up to 10 m high. 

Bring the whole family to discover the hidden world beneath us. With an endless multitude of colors and jagged rock formations, this lava caving tour is sure to give you a unique and captivating experience. This is a perfect opportunity to step outside your comfort zone and discover something completely new.

Your half-day lava caving adventure will end with a drop off in Reykjavik.

Pick-up Information

Pick up: The pick-up is at 08:00 am from our available pick-up points in Reykjavik. Picking everyone up can take up to 30 minutes so your patience is greatly appreciated.
Available pick-up points: Arctic Adventures’s pick-up list.

Meet on location

If you prefer to meet us on location the tour begins at 09:30 am. Please be at Raufarholshellir Cave 20 minutes prior to departure. The tour is 1 hour in duration if you meet us on location.

Practical information

Remember to bring: Warm outdoor clothing, waterproof jacket and pants, headwear and gloves. Good hiking shoes are highly recommended.

What if I don’t own all of these clothing necessaries?
Don’t worry, you can always rent the necessary clothing in the booking process.

Please note

This tour is operated with our trusted partner.

What does meet on location entail?

Meet on location means travelling to the location of the tour yourself and then meeting our tour guides rather than being picked up and taken to the location.

How is it best to be ready for a pick-up for a tour with Arctic Adventures?

This is a great question. We ask all participants to be ready from the start of the pickup time indicated. This is because you may well be the first pick up of the day. Please be at your assigned location at the start time that you chose when booking the tour.

Here you should wait for your guide.

Have your email and phone number listed with us so we can contact you if we run into any trouble finding you.

View our pick-up locations in Reykjavík.

Can I drink alcohol before or during Arctic Adventures tours?

Before and during activities on the multi-day tours consumption of alcohol is prohibited. If we suspect that a participant is intoxicated, we will prohibit them from joining the activity.

After the activities of the day are finished, you are welcome to have a drink and relax.

Do you offer any family friendly tours, for younger children?

Yes, we do. Langjökull Ice Cave is a magical experience, the tour has no minimum age and is a wonderful option for the whole family. Whale Watching with our partner company Elding has been a favourite with families traveling with young children, these guys have a great success rate in seeing whales (upwards of 98% in the summertime).

Another option would be the Landmannalaugar Safari on this tour you get to explore parts of the Icelandic highlands and bathe in natural hot springs. Most of our jeep tours are also suitable for children over the age of 6 years old. If you would like a nice and relaxing experience we would also recommend the Golden Circle & Secret Lagoon tour.

Can the itinerary for the tour change?

Your safety is our number one priority! Keeping this in mind, Arctic Adventures reserves the right to adjust the itinerary and/or take different routes depending on conditions. Please read more information in our cancellation policy.

Is there a guide on each Arctic Adventures tour?

Yes, there is a specially trained and certified guide on each of our tours. The only exception to this is for our self-drive tours.

All of our tours are guided in English.

Can the guide advise if I am eligible for rescheduling the tour and/or a refund?

No, for all your questions and concerns you would need to contact our customer service.

What type of power outlets are used in Iceland? Do I need to bring an adapter?

The standard in Iceland is 230V and 50Hz and we use F-type power sockets and plugs, so you might have to bring an adaptor if you are visiting from UK, USA, Canada or other countries using a different voltage, Hz or plugs.

How are the tours rated in terms of difficulty?

Our tours are split into four different categories that help participants to understand what to expect from the tour. The categories are Easy, Moderate, Challenging and Demanding. Each tour is rated making it easier to find tours that suit you.

For further information about the difficulty ratings and descriptions.


How does carbon offsetting work?

We’ve partnered with the Kolviður Fund in a new carbon offsetting program, which passengers can select to participate in at the time of booking.

The Kolviður Fund is the oldest, most respected carbon offsetting program in Iceland. With your support, one tree will be planted in special Kolviður forests in Iceland to carbon offset your tour with us.

Kolviður forests are strategically planted to absorb the maximum amount of CO2 and the forests are protected for a minimum of 60 years. During their lifetime the trees absorb carbon and store it in their root system, trunk, and branches. Trees also prevent soil erosion and maintain storage of carbon in the soil.

What equipment do you provide for the lava tube caving trip?

We provide you with a headlight and a helmet.

What should I wear on a lava caving tour in Iceland?

Like always in Iceland, it’s best to dress in layers. Warm layers closest to you preferably wool/thermal underwear, pants sweater and on top waterproof outdoor clothing. We also recommend that you wear good hiking boots and gloves. Jeans have proven to be a bad choice.

Book this tour

Price from: 6.990 ISK


If you are staying downtown Reykjavik please read this information about pickup.

You have chosen: From Reykjavik


You have chosen: Meet on Location


Underworld - Lava Caving Tour | Average rating: 4.5/5 based on 12 customer reviews

"Excellent caving trip" | 5 stars By Fiona Macdonald 30/01/2018
Our guide Andrea was punctual, polite and friendly. A very informative and enjoyable trip
"I had a great time" | 5 stars By Wenjing Zheng 04/03/2018
The crew members are very friendly and lovely. The tour itself was more like a little adventure caving tour, and this is the kind of caving I love!
"Icelands Finest" | 5 stars By Lisa Reilly 08/03/2018
Definitely worth doing. Fine visual treats!
"Great trip" | 5 stars By John 10/03/2018
Our trip to the lava tube cave was well worth it. The trip was short, but not rushed and made for a great start to the day. Zaho our guide did a good job leading us through the caves. We would recommend it.
"Overall the tour was fab" | 5 stars By Hannah Vallance 01/03/2018
My only comment would be that the bus windows got lots of condensation on them so we couldn’t really enjoy the view on the way to the lava tunnel. Overall the tour was fab and I’d def recommend to a friend.
"Great tour!" | 3 stars By Caitriona Hartnett 06/03/2018
Great tour! Loved the caving but felt totally unprepared for crawling into a hole in the ground. Would have liked to be provided with clothing recommendations when we booked the tour. really enjoyed the golden circle tour! we booked 2 tours with your company - should have offered some sort of a discount for booking more than one tour.
"Both trips where very nice and the guide was great" | 5 stars By Nicole 10/03/2018
We make the tour together with the hirse riding tour. Both trips where very nice and the guide was great. The only problem was the connection between the tours which cost a lot of time.
"The Lava Tunnel tour was incredible" | 4 stars By Raven 22/03/2018
The Lava Tunnel tour was incredible and our tour guide was very knowledgeable. I’d definitely go on another tour with Arctic Adventures when I’m Iceland again!
"The part we saw was impressive" | 3 stars By Jennifer Lohmann 17/04/2018
Unfortunately, only a part of the cave was shown to us. The other part is not accessible in the "winter", the guide made us aware before the start. The tour through the cave lasted only 30 minutes. The part we saw was impressive.
"Great tour" | 5 stars By Cathal 31/01/2018
Great tour. Friendly guide. Ran like clockwork.
"The tour was great!" | 4 stars By Mário Canastro 11/05/2018
The tour was great! but there should be a little bit more explanation about the cave.
"Fantastic experience with Arctic Adventures" | 5 stars By Sesh 19/05/2018
Great tour. Enjoyed the adventures - glacier hiking, lava caving, geysers. Nice knowledgable tour guides
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