Available all year long, this speleology tour takes you to unique locations in Iceland’s most spectacular lava tube caves and craters. These beautiful, natural phenomena were created when the surface lava solidified but magma continued to flow in tunnels. Get picked up in Reykjavik or meet us on location
Our Best-Selling Caving Day Tour
Small Group Experience
Expert Caving Guide
Duration: ~1-3 hours
Pick-up: 08:00 & 13:00
Group maximum: 12 persons
Available: All year
Age limit: 6 years
- The Colorful Journey's End lava tube cave
- A Scenic drive through a lava field
We offer two departures every day at 08:00 a.m. and 12:00 p.m. from Reykjavik. 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 Leidarendi Cave at 9:00 or 12:45. GPS Coordinates: 63.981606, -21.834674
The total tour duration is around 3 hours, and we spend around 1 hour in the cave and if you meet us on location.
Able to crawl and walk on uneven surface.
Pick-up & drop-off in Reykjavik, guided caving tour, flash light, gloves and helmet. Small group experience.
Bring with you:
Warm clothing, waterproof outer layers, headwear, gloves and good hiking shoes are recommended (can also be rented, see booking engine).
Reviews on TripAdvisor
"Before we climbed through the narrow opening of the cave, our guide reminded us that today we were cavers, not tourists. That set the stage for the entire tour. Unlike other cave tours, there wasn't a man-made path through the cave and the only light came from our flashlights. There were points in the cave where it was so narrow that we actually had to crawl through. But our guide was experienced and reassured us that we were all capable of making it through. We would definitely do the tour again!"
Cave Leidarendi is about 900 metres long and is situated in a lava field near a volcanic crater south-east of the town of Hafnarfjordur. It was first mapped in 1992.
We will enter through narrow cave entrances and find they open out to reveal an extraordinary scenery of lava formations and unexpected colours.
We will see interesting forms of lava stalactites and different rock formations making this an experience of majestic and almost indescribable beauty. The cave becomes wide and high in some places and with an even floor. However, the trip can also be tricky at times, since we need to crawl in a few places.
We recommend you wear good walking shoes or hiking boots which are suitable for walking on uneven lava surfaces.
Stóri-Bolli (Big-Cup), is scoria crater and is about 150 metres in diameter. Around 2000 years ago an eruption started in Stóri-Bolli and from it flowed its namesake lava field, Stóra-Bollahraun and the lava tube Leidarendi was created within this.
We will see the craters from the site of the cave. It only takes 25-30 minutes to drive to the cave from Reykjavik and the cave's entrance is just a short distance from the road.
When the cave was discovered there was found deep in the cave a skeleton of a little lamb that had stumbled or fell in to the cave at some point. This skeleton is still inside the cave and we will have the opportunity to see and observe the skeleton.
Nobody knows how this little lamb got in there but we sure know it had difficult times in the total darkness.
We'll be using hand-held flash lights and headlights. Most of the time you can choose which one you prefer.
This tour is suitable for all who can walk on uneven surfaces and at times, on all fours.
The cave's ceiling and walls are broken or collapsed in very few places and it is therefore easy to navigate. Although sometimes the cave’s ceiling gets a bit low so at times you might have to crawl for a short distance.
Leidarendi lava tube is considered to be a subterranean wonder world. The entrance is a small pit that leads down into the cave; the cave itself runs in both directions and connects in two parts so it runs as a line with a circle in the middle.
Respect for nature and safety are our main concerns. There are no handrails, lights or any tools installed in or around the caves. We rely completely on the equipment we carry and it is important that people respect our guidelines.
You don't need to be afraid to go caving in Iceland; Cave Leiðarendi hasn't changed in over 2000 years!
Map - (click to enlarge)
Read customer reviews
Volcanic Veins - Rated 4.8/5 based on 36 customer reviews
Great tour, passionate guide5 by Jim September 9, 2018
Amazing tour!5 by Lisa September 4, 2018
Awesome experience5 by Debbie Snelgrove September 29, 2018
Just average3 by Mateusz September 20, 2018
Memorable5 by Gary S. Wasserman September 13, 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
Awesome Adventure!5 by Stacey Reid June 8, 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
UnderWorld Adventure Tour5 by Samantha W April 5, 2019
Awesome experience!5 by Christina T. March 8, 2019
Loved the underworld tour of volcano caves5 by BP March 31, 2018
Lava tube: if you want to conquer your fears...5 by Alejandro Katz March 2, 2019
Great Tour!!4 by Cody Padlo March 19, 2019
UnderWorld tour3 by Gareth Whale February 27, 2018
Cave with Ice4 by Pete Mulholland February 25, 2019
All guides where the bomb!5 by Clinton Fuller February 22, 2018
Amazing5 by Nathan February 20, 2019
Leidarendi cave5 by Terry Stratford December 6, 2018
Experience5 by Sonia Sousa December 31, 2018
A Great Afternoon5 by Karen Lawson December 2, 2018
Well Done & Very Happy!5 by Sharmaine December 12, 2018
Recommended5 by Josh November 4, 2018
Great snorkeling with great guides5 by Pamela November 19, 2018
Underworld Lava tubes5 by Jane C October 7, 2018
Despite the crazy Iceland weather - tour guides are awesome5 by Hannah October 6, 2018
Great tour5 by Bettina October 28, 2018
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
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.