The Lava Tunnel – Lava Falls Adventure

4 hour

Jan – Dec



Min. age:
12 years


In this extreme tour, you’ll be allowed to descend into the depths of Raufarhólshellir for three full hours. This fascinating lava tunnel will be yours to explore in this fully-immersive and extremely adventurous caving tour.

Why you’ll love this tour

  • Visit the magnificent Raufarholshellir lava tunnel
  • Explore one of the longest and best-known lava tubes in Iceland
  • Explore stunning lava formations rarely seen outside Iceland
  • Enjoy the guide’s informative overview of the cave’s history and geology
  •  Many of our guests have told us that this unique day tour is one of the most beautiful experiences of their entire Iceland vacation.

What’s included?

Activities and gear

  • Guided caving tour
  • All necessary safety equipment


  • Not included

Staff & experts

  • English speaking local expert guides and drivers


  • Meals not included


  • Explore a magnificent lava tunnel
  • Raufarhólshellir lava cave

Tour itinerary

Raufarhólshellir cave is only about 35 km (21.7 mi.) from Reykjavík, so it is reasonably nearby. You can either meet your guide at the cave site or opt for a morning pickup. The lava tunnel is near Hveragerði, a geothermal town which is only about a 30-minute drive from the capital city. Driving from Reykjavík east on Route 1 and drive for about 18 km. Turn right onto Route 39 (Þorlákshöfn) and drive for another 12 km. The parking area will be on your left hand side. You can also find the cave on Google Maps. GPS coordinates: N.63º 56.407 / W. 021º 23.742

When the whole group has arrived and is ready, we’ll pass out all the necessary equipment. You’ll be provided with a helmet, flashlight, gloves, and crampons, if necessary. The ground in the cave is uneven and the cave remains between 0 and 4ºC (32-39ºF) all year round. For that reason, you’ll need to come prepared with sturdy hiking boots and warm clothes.

The sheer beauty of this lava cave is sure to impress you. Even upon entering, the range of colors that you can find on the walls of the cave, painted there by the minerals that took part in the eruption, is incredible and the breathtaking shapes formed by the lava are astounding. If you visit during the winter, all of this beauty will be amplified by the beautiful natural ice formations that fall gracefully from the ceiling as well as rise from the ground.

At the beginning of the tunnel, a walkway has been built to help tourists enter the cave despite the uneven ground. But, as this is an extreme lava tunnel tour, we’ll soon exit the walkway to head out on the less explored route. This rocky ground will become more rugged the deeper into the depths of the tunnel we go.

While this may not be the easiest path to follow, for those who are in good physical condition, this extra effort really adds to the sense of adventure. While the terrain is uneven, there will be no crawling or climbing required anywhere in Raufarhólshellir.

The cave is very open with wide paths and a high ceiling, making it the perfect place for those who dislike confined spaces to explore. It’s also very long. Reaching almost 1400 m (4593 ft.) in length, this tunnel is one of the longest in Iceland to allow tours.

While you explore, your expert guide will inform you about how the cave was formed, comment on its fascinating geology, and talk about the volcanoes of Iceland in general. You won’t run out of things to see or paths to explore during this underground adventure. There is enough fascinating geology to make you want to return for a second trip!

Once we have explored Raufarhólshellir fully, we’ll exit the cave to rejoin the outside world and enjoy the fresh air. You’ll be able to go back to civilization as a newly-minted expert on the lava tunnels of Iceland, no doubt already planning your next underground adventure during the trip home.

Photo gallery

Important notes

The following is important information applicable to our caving tours. If you have any questions please don’t hesitate to contact us by email or phone, we are here to make your tour exceptional!

Only for people in good physical shape. This tour is not recommended for people with back, knee or other health issues.

This tour is operated by our trusted partner.

Our day tours are very popular and we have many days when all available seats are booked out. Please book your tour early to avoid disappointment. You can book this tour online using the booking form or just call our office. We typically respond to phone calls from 8:00 AM to 17:00 PM GMT – if you do not reach us, please send an email and we will reply your message as soon as possible.

All prices are per vehicle. We accept payment by major credit and debit cards with no additional fees. Gratuities are not included.

Tour itinerary changes:
At all times your safety is our first priority. You can expect any kind of weather in Iceland. For this reason, the tour itinerary may be subject to change the sights without notice or the tour might be canceled due to weather, or other unforeseen circumstances. If the timing changes, we will need your valid mobile phone number to contact you and inform you of the time change. Please don’t forget to fill out your phone number on the booking form. If the tour is canceled, you can choose to receive a full refund or to reschedule your tour for another day. We make every effort to avoid any such changes wherever possible.

What to bring:
Since the weather is unpredictable, always bring comfortable outdoor clothes, warm layers, with waterproof and windproof outer-layers. Jeans are not suitable clothing; waterproof jacket and shoes and a warm sweater are highly recommended. It’s best to wear waterproof boots. Bring some snack or packed lunch. Bring your personal daily medications if required.

Medical conditions:
Please let us know of any allergies or medical conditions that you may require assistance with.

Book your tour

19.900 ISK
All prices are per person.


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