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Discover the stunning Raufarhólshellir lava tunnel in Iceland with this guided underground tour. Learn about geology, enjoy darkness, and explore unique formations.
If you’re heading to Iceland, chances are you’ll want to see some of the country’s incredible natural wonders. One experience that often makes the list is exploring the Raufarhólshellir lava tunnel, one of the longest and most famous lava tubes in the country. This guided tour offers a peek into a volcanic world formed over 5,000 years ago. With its dramatic formations, enchanting ice stalagmites, and a memorable plunge into total darkness, it’s an adventure you’ll likely remember.
What makes this tour stand out? We love how accessible and well-organized the experience is, making it suitable for most travelers. Plus, the guides are consistently praised for their knowledge and friendly attitude. That said, because it involves uneven terrain and some slick spots, it’s best suited for those comfortable with walking in rugged conditions. If you’re curious about geology, love underground adventures, or just want to see something truly unique in Iceland, this tour is a solid choice.
However, keep in mind that the tour lasts about an hour—so if your time in Iceland is limited or you prefer longer adventures, you might want to consider additional caves or extended excursions. Still, for the price of around $61, this experience offers a fascinating glimpse into Iceland’s volcanic past—perfect for travelers seeking authentic, hands-on natural beauty.

The adventure begins at the Raufarhólshellir main entrance, located along Þorlákshafnarvegur. From there, your guide will lead you into this incredible underground world, giving a rundown of how the lava tube was formed. Since it’s a natural formation, the path is somewhat rugged—think uneven rocks, slick patches, and narrow passages—so sturdy footwear is vital.
Once inside, you’ll walk along a route marked by a footbridge, allowing you to admire the various lava formations. Many visitors have commented on the visual spectacle of the formations, with their vibrant colors and textured surfaces that tell the story of volcanic activity from thousands of years ago. Some parts are wider, ideal for photography, while others are tight, requiring a bit of agility.
An essential highlight for many is the total darkness experience. The guide will turn off the lights in the cave, allowing you to feel the profound silence and complete blackness that early explorers and lava dwellers might have experienced. This moment of sensory deprivation often surprises visitors, adding a touch of adventure and mystery.
The tour also includes stories and fun facts. For example, the guide might share tales of Hollywood movies shot in Iceland or how the cave’s icy stalagmites formed from dripping water that froze in the cold air. One reviewer mentioned their guide’s energy and enthusiasm, which made the experience both educational and entertaining.
The ice stalagmites are a particular crowd-pleaser, especially in winter months when they are more prominent. Some visitors have been able to collect small stones or pieces of ice, adding a tangible memory of the trip. The vivid colors, caused by mineral deposits and lighting, give the tunnel an almost otherworldly vibe.
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Most reviews praise the guides for their knowledge and friendliness. Names like Joan, Alex, Vanessa, and Dimitri come up with glowing remarks about their energy and storytelling skills. The group sizes are generally small, ensuring you won’t be lost in a crowd, and each visitor gets plenty of time to explore and take photos at their own pace.
The tour lasts approximately 1 hour, striking a good balance between enough time to see the highlights and not feeling rushed. Some guests appreciated the flexibility to linger longer in certain areas or to take photos without feeling hurried.
“It was an informative, interesting tour. The guide gives you information walking in and then you can come out at your own pace so there is plenty o…”

At $61 per person, the tour offers good value, especially considering it includes helmet, headlamp, and crampons (in winter). The reviews consistently mention the quality of the guides and the unique scenery as making this a worthwhile purchase. Compared to other underground adventures or cave tours, this one is reasonably priced, given the depth of experience and the insights provided.
This tour appeals most to geology buffs, adventure seekers, and nature lovers. If you’re interested in volcanic landscapes and underground formations, you’ll find this a captivating experience. It also suits travelers who appreciate guided storytelling and don’t mind a bit of physical activity. For families with older children, it offers a fun, educational outing.
Those seeking a longer or more intense caving experience might prefer to look into additional tours or extended cave explorations. But for a quick, authentic glimpse into Iceland’s volcanic secrets, this adventure hits the mark.
The Raufarhólshellir lava tunnel tour provides an engaging, educational, and visually stunning peek into Iceland’s volcanic past. Priced reasonably at $61, it offers excellent value, particularly with knowledgeable guides and the chance to see formations that are rarely accessible outside of Iceland.
Travelers who love natural wonders, enjoy exploring underground environments, or are simply curious about volcanic geology will find this tour rewarding. The mixture of scenic beauty, storytelling, and immersive darkness creates a memorable experience for most visitors.
While the terrain requires sturdy shoes and a bit of agility, those who are comfortable with uneven surfaces will be rewarded with a truly unique adventure. Whether you’re a geology enthusiast, a family exploring, or a solo traveler seeking authentic Icelandic sights, this tour is a worthwhile addition to your trip.
In short: For a genuine underground adventure that combines nature’s raw power with captivating formations and expert guides, the Raufarhólshellir lava tunnel tour is a top choice in Iceland.
Is the tour available all year?
Yes, the Raufarhólshellir lava tunnel can be visited year-round, making it a reliable option regardless of Iceland’s weather.
How long does the tour last?
The guided experience takes about 1 hour, giving you ample time to explore and enjoy the sights without feeling rushed.
What should I wear?
Sturdy walking shoes are essential, especially since the terrain is uneven and slick. In winter, it’s advisable to dress warmly as parts of the cave can be cold and damp.
Are helmets and headlamps provided?
Yes, the tour includes helmets and headlamps to ensure safety and visibility as you navigate the tunnel.
Can I take photos inside?
Absolutely. The guides allow plenty of time for photography, so bring your camera or smartphone to capture the formations and icy stalagmites.
Is this tour suitable for children?
Most older children and teenagers who are comfortable with rugged terrain will enjoy this experience. Check with the tour provider for specific age limits if concerned.
What are the main attractions?
Expect to see unique lava formations, vivid colors, ice stalagmites, and to experience total darkness, which adds a profound sense of nature’s power.
How do I book the tour?
You can reserve your spot online, and cancellation is possible up to 24 hours in advance for a full refund, providing flexibility in your planning.
Whether you’re craving a geological adventure, a cool underground walk, or just want to tick an iconic Iceland attraction off your list, this lava tunnel tour offers a fantastic, authentic experience worth every penny.