This lava cave tour takes you to the depths of Iceland’s volcanic terrain, where spectacular lava tube tunnels and craters are found. These beautiful and natural wonders are created by flowing lava under the earth after a volcanic eruption. While you are exploring the cave, our certified guide will explain everything about the formation and history of the lava caves, volcanoes and much more.
Our Best-Selling Caving Day Tour
Expert Caving Guide
Duration: ~1-3 hours
Available: All year
Age limit: 6 years
Guide Ratio 1:15
- The colorful Raufarhólshellir lava tube cave
- A Scenic drive through a lava field
If you select pick up from Reykjavik, departure begins at 08:00 a.m. Please note that it can take up to 30 minutes for us to arrive.
If you don't need a pick up you can meet us at Raufarhólshellir, 30 minutes from Reykjavik. Please be advised to arrive at least 20 minutes prior to the tour, which starts at 9:30 am.
The total tour duration is around 3 hours, and we spend around 1 hour in the cave and if you meet us on location.
Pick-up & drop-off in Reykjavik, guided caving tour and helmet with headlamp
Bring with you:
Warm clothing, waterproof outer layers, headwear, gloves, and good hiking shoes are recommended (can also be rented on booking). We recommend bringing a packed lunch in case you get hungry.
Reviews on TripAdvisor
"We went on the Volcanic Veins caving tour and we loved it. Such a cool experience! The caves were amazing, it was kind of surreal being in there and seeing the colour of the walls and different shapes that have formed in there. The caves are in the middle of nowhere and surrounded by beautiful landscape. It was just me, my two friends and a cute older German couple (probably late 60’s, early 70’s) who were on the tour. The guide did a great job at making sure everyone was comfortable while going through the caves. Booking with Extreme Iceland was straight forward and they had good communication and a variety of options to be picked up from. The guide was so friendly, knowledgeable and funny! She was great and really added to the already amazing experience!"
Raufarhólshellir is one of the longest lava tubes in Iceland. Join us for a fantastic hike along a volcanic path of an eruption before our time.
Around 5200 years ago, the Leitahraun eruption carved fascinating lava tubes and caves under Iceland's lava fields. On this tour, we’ll descend into one of the most famous lava caves in Iceland and discover stunning stalactites and unusual rock formations, making this an unforgettable experience.
The tunnel stretches about 4500 ft (1360 m), with headroom of up to 10 m high. Every winter, you'll be greeted with hanging icicles of all shapes and forms at the entrance of the cave.
The volcanic tunnel tour is suitable for adventurers of all ages, so families with kids are welcome! Join us and step outside of your comfort zone. Go on an adventure exploring Iceland's underworld!
This tour is operated with our trusted partner.
Map - (click to enlarge)
Read customer reviews
Volcanic Veins - Rated 4.8/5 based on 36 customer reviews
UnderWorld Adventure Tour5 by Samantha W April 5, 2019
Great Tour!!4 by Cody Padlo March 19, 2019
Awesome experience!5 by Christina T. March 8, 2019
Lava tube: if you want to conquer your fears...5 by Alejandro Katz March 2, 2019
Cave with Ice4 by Pete Mulholland February 25, 2019
Amazing5 by Nathan February 20, 2019
Excellent Experience5 by Karley & Jeff January 27, 2019
Good lava cave tour4 by Shreerang A Godbole January 22, 2019
Great day underground5 by Rambling Rose January 20, 2019
Underworld tour with Albert5 by Amanda January 19, 2019
Experience5 by Sonia Sousa December 31, 2018
Well Done & Very Happy!5 by Sharmaine December 12, 2018
Leidarendi cave5 by Terry Stratford December 6, 2018
A Great Afternoon5 by Karen Lawson December 2, 2018
Great snorkeling with great guides5 by Pamela November 19, 2018
Recommended5 by Josh November 4, 2018
Great tour5 by Bettina October 28, 2018
Underworld Lava tubes5 by Jane C October 7, 2018
Despite the crazy Iceland weather - tour guides are awesome5 by Hannah October 6, 2018
Awesome experience5 by Debbie Snelgrove September 29, 2018
Just average3 by Mateusz September 20, 2018
Memorable5 by Gary S. Wasserman September 13, 2018
Great tour, passionate guide5 by Jim September 9, 2018
Amazing tour!5 by Lisa September 4, 2018
Fantastic tour " Underworld"5 by Caradec Anne August 27, 2018
Great lava tube tour5 by Tina July 31, 2018
Interesting visit4 by Jesper July 20, 2018
Awesome tour5 by Deborah Erbs July 18, 2018
Fun in the Caves5 by Michelle July 1, 2018
Emily was the BEST5 by Juli Greenberg June 26, 2018
Just 3 on the tour5 by Tom Lynton June 20, 2018
A perfect tour to explore the unexplored5 by Anik Shah June 20, 2018
Awesome Adventure!5 by Stacey Reid June 8, 2018
Loved the underworld tour of volcano caves5 by BP March 31, 2018
UnderWorld tour3 by Gareth Whale February 27, 2018
All guides where the bomb!5 by Clinton Fuller February 22, 2018
Disclaimer: All our tours are undertaken on the responsibility of its participants. Extreme Iceland does not assume any responsibility for accidents that are caused by its customers or can be traced to their own actions.