Available languages
1 hour
Mobile ticket
Explore Iceland’s ancient underground lava tunnels at Raufarholshellir lava tunnel on a caving experience! Hidden deep beneath the stunning Blue Mountains (Bláhnjúkur), the Raufarholshellir lava tunnel is home to a volcanic wonderland of rock formations, ice, and craters. Using specialist caving equipment, follow a local guide and hike through the tunnels to the cave, discovering Iceland’s otherworldly sights at their finest and witness the inner workings of a volcanic eruption.
Suitable for all physical fitness levels
For a full refund, cancel at least 24 hours before the scheduled departure time.
Guided Tour with a Certified Caving Guide
All Necessary Safety Equipment
Helmet & Head Torch
Crampons (in winter)
Meals
Transport to and from Reykjavík
Raufarholshellir
Meet our experienced guide at the Lava Tunnel office and explore a stunning geological paradise Raufarholshellir lava tube.
20 reviews
Total reviews and rating from Viator & Tripadvisor
Rhonda N,
May 20, 2025
- Review from Viator
This was such a cool tour! You can’t exploit lava tunnels without a tour guide so it’s def something worth checking out! Our guide was very nice, funny, and informative!
geeijo,
Jan 21, 2025
- Review from Tripadvisor
I enjoyed this trip, not too far from Reykjavik. The Lava tube was amazing adorned with icicles and upside down icicles! Our guide was super excited to show is the Lava tube and her "office".

Tasha P,
Dec 8, 2024
- Review from Viator
Awesome! Very cool lava tube with beautiful colors, textures, and skylights! Stunning when the water drops freeze in a pile and the lights shine through them. They look like a bunch of candles. We highly recommend this activity!
Maxine W,
Dec 4, 2024
- Review from Viator
Very well organised. You are provided with everything you need (helmet, crampons & walking stick). The lady who was our guide was amazing. She made it very interesting and you could tell how much she loves her job. Full of enthusiasm and made us feel safe and able to ask questions. Would defiantly recommend this trip to anyone visiting Iceland.
Sara B,
Oct 9, 2024
- Review from Viator
Educational tour with actual geologists and vulcanologists. I learned a lot about how the volcanoes have shaped Iceland and its people. Highly recommend! Even the sulky teen had fun!
Kirsty P,
Jun 2, 2024
- Review from Viator
What a great tour - the lava tunnel was so beautiful and the ice stalagmites made it feel even more primordial. Highly recommend this tour.
Sightseer598522,
May 5, 2024
- Review from Tripadvisor
Awesome experience and Lili was great. The caves were a really cool experience and would highly recommend anyone going!





Sharon Y,
Feb 20, 2024
- Review from Viator
My husband and I enjoyed going into the cave. I was concerned about the walk but it was relatively easy. The company provides you with equipment needed to take the quick trekk. The guide was knowledgeable.
Chandra C,
Nov 11, 2023
- Review from Viator
Great introduction to lava caves. Guides are very knowledgeable. It was super fascinating and by the end I wanted to do the excursion/longer tour!!!
marcsV4112IQ,
Aug 9, 2023
- Review from Tripadvisor
Great experience in the “real” tunnel with magnificent colours and stone formations. You need a good portion of condition for the three hour hike. Loved the knowledge and experience of our guide.
Operated by Arctic Adventures