Raufarholshellir LavaTunnel extreme Tour
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The Lava Falls Adventure Tour

, Iceland
Adventure ToursCavingAdrenaline & Extreme
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About this activity

Descend into Raufarholshellir, Iceland's most dramatic lava tunnel, to reach the rare and stunning Lava Falls hidden deep underground. This is an expert-guided caving adventure through boulder-strewn passages that rewards fit, adventurous travellers with one of the world's most unusual geological formations.

The Lava Falls Adventure Tour takes you off the beaten path and into the depths of The Lava Tunnel (also know to Icelanders as Raufarholshellir) to explore the source of the cave, the magnificent Lava Falls. The Adventure tour requires good fitness and balance. The tour traverses difficult terrain, including big rocks and boulders. It takes on average 3-4 hours to complete, relying on an experienced guide and head torches to navigate through this underground wonder. At the end of the cave you will experience breathtaking scenery as you will witness the origin on the lava flow that created the cave, which includes amazing lava falls rarely seen in the world.

A more extreme tour for the adventure seeker

This is the tour for the adventure seekers, it takes you beyond the standard tour, all the way to the end of the tunnel where magnificent lava falls and other natural wonders await in the dark. This is truly an unforgettable experience, full of sights and emotions. The Lava Falls tour is the highest rated tour of The Lava Tunnel. It’s done in small groups only, with a designated caving guide. 

Please note that this tour is more extreme than normal attractions as it traverses over a difficult terrain, including big rocks and boulders so a good balance and good physical health is required.

An adventure to remember

You will spend 3 – 4 hours in the cave. That being said no prior caving experience is required. We rely solely head torches to navigate through this underground wonderworld so we do not recommend this tour for those that may suffer from some sort of claustrophobia. We also do not recommend this tour for pregnant women or children younger than 12. Passengers must be wearing hiking shoes with ankle support.

Pick up to the Lava Tunnel available

If you are staying in the Reykjavík area we can provide a pick up and drop off if needed (for additional price). Please note that this pick up needs to take place outside the bus ban zone in downtown Reykjavik (or designated bus stops). The tour inside the cave takes approximately 3 - 4 hours. However, the total tour takes aprox. 5 - 6 hours including pick up and drop off.

Highlights

  • ✓Navigate to Iceland's legendary Lava Falls—a rarely seen natural wonder at the tunnel's end
  • ✓Traverse challenging terrain with boulders and rocky outcrops requiring balance and scrambling
  • ✓Small-group experience with dedicated caving guide and head torch navigation
  • ✓Witness the geological origin point where lava flow carved the entire cave system
  • ✓No prior caving experience needed, but solid fitness and confidence in difficult terrain essential

Insider tips

  • ★Book early; small groups fill quickly and weather can affect access to this remote cave system
  • ★Wear sturdy hiking boots with good ankle support—loose rocks and uneven ground dominate the route
  • ★The cave stays around 5°C year-round; layer up and bring an extra warm base layer even in summer

Good to know

  • •Duration is typically 3–4 hours; plan for full afternoon availability including travel to/from site
  • •Good physical fitness and balance required; steep scrambles and boulder sections are unavoidable
  • •Head torches provided; bring spare batteries if you have a personal light
  • •Not suitable for mobility impairments or severe claustrophobia; confirm fitness level when booking

Who it's for

Experienced hikers and adventure-sport enthusiasts seeking extreme natural attractionsGeology enthusiasts and cave explorers wanting a world-class lava formation experienceActive travellers with solid fitness who want to go beyond standard tourist routes in Iceland

Best time to visit

May to September offers the most stable weather and longer daylight for access. Winter ice and snow can close or hazard the cave approach; always confirm conditions with your operator.

Frequently asked questions

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Every tour in Iceland →

Available
From€204
per person