Reykjavík: Silfra Fissure Snorkeling and Lava Caving Tour

This tour promises an adventure through Iceland’s volcanic underground and a swim in one of the world’s clearest waters. While I haven’t personally taken this journey, the glowing reviews highlight its unique charm and value.

What makes this experience stand out? First, the expert guides like Weronika, Nebo, and Jónas are praised for their friendliness and wealth of knowledge. Second, the breathtaking scenery in both lava caves and Silfra’s blue depths is truly remarkable. Third, the added touch of free underwater photos and a cozy post-snorkel cocoa shows attention to detail.

However, a consideration worth noting is the long day’s schedule—it involves traveling outside Reykjavik and alternating between two activities. This might be a challenge for travelers with limited stamina or tight schedules.

This tour suits those eager for a full-day, off-the-beaten-path adventure, especially if you’re interested in geology, volcanic landscapes, and one-of-a-kind underwater vistas.

Good To Know

• Expert Guides: Guides like Weronika and Nebo are often highlighted for their friendliness and professionalism.
• Authentic Icelandic Landscapes: Lava tunnels and Silfra’s crystal-clear waters offer immersive views into Iceland’s volcanic heritage.
• Comprehensive Experience: Combines underground lava caving with snorkeling, giving a full picture of the country’s geological wonders.
• Great Value: At $202 per person, considering the included equipment, transportation, and photos, many reviewers find this experience worth the cost.
• Weather Preparedness: Expect to be outside in cold conditions; warm clothing and change of clothes are essential.
• Small Groups: Enhanced safety and personal attention, with groups as small as 4-7 people reported.

You can check if your dates are available here:

An In-Depth Look at the Tour Experience

Starting with Lava Caving at Raufarholshellir

Your adventure kicks off early, typically with a pickup from Reykjavik (if selected) and a scenic drive to the lava tunnel at Raufarholshellir. This part of the tour is often described as both fascinating and peaceful. The lava caves are beautifully formed, and guides take pride in teaching you about their volcanic origins.

One reviewer noted, “The lava tunnels are really interesting,” and appreciated the detailed storytelling from guides like Nebo. As you explore the dark, winding tunnels, you get a sense of Iceland’s fiery past. Some guides permit you to make your own way back, offering excellent opportunities for photos or just soaking in the atmosphere.

Pro tip: Dress warmly. The caves are cool but not freezing, and the tour provides all necessary caving gear. Expect a mix of walking and crawling, so comfortable footwear is important.

The Scenic Drive to Þingvellir National Park

After the lava spelunking, a short drive takes you to Þingvellir, a UNESCO World Heritage Site. Here, you’ll have a chance to relax, refuel, and enjoy some Icelandic snacks at a local bakery—an appreciated perk noted by many reviewers. The drive offers stunning views of Iceland’s volcanic landscape, setting the tone for the second part of your adventure.

Snorkeling in Silfra Fissure

The highlight for many is snorkeling in Silfra, a crack between the North American and Eurasian tectonic plates. The water here is famously clear—so much so that divers often say visibility exceeds 100 meters. Visitors float effortlessly in a surreal, blue-tinted environment that looks almost alien.

Guided by certified PADI experts, you’ll be fitted with a dry suit, gloves, and mask. Reviewers like Wade and Jennifer rave that “the water was colder than expected but the dry suits kept us warm,” and that the experience is “out of this world.” It’s an incredibly gentle swim, with guides like John and Taz ensuring everyone feels safe and comfortable.

The underwater photos taken by guides are a lovely souvenir, capturing your floating between two continents. Afterward, a warm cup of cocoa and biscuits make for a cozy ending, especially appreciated after braving the icy waters.

More Great Thing To Do Nearby

The Logistics and Group Dynamics

The tour operates in two parts, with a break in between. You’ll join the lava caving first, then meet again in Þingvellir for snorkeling. Pick-up options are available from certain Reykjavik locations, making the process more convenient.

Group sizes are generally small, often just a handful of participants, which enhances the personal touch. Many reviewers mention the guides’ attentiveness—ensuring safety and answering questions throughout. The entire day lasts about 5-9 hours, so be prepared for a full day of adventure.

Practical Considerations

• Price and Value: At $202, the tour covers transportation, caving and snorkeling gear, expert guides, park entry fees, and complimentary underwater photos. Travelers consistently say it’s good value considering the included experiences.
• Physical Requirements: You need to be comfortable swimming and in good health. Pregnant women, children under 12, and people with mobility or medical issues are advised not to participate. The water is cold, and the activity involves some physical exertion.
• Clothing: Warm clothes, a change of dry clothes, and a towel are essential. Sunglasses are discouraged due to the gear, and waterproof clothing is recommended.

Who Is This Tour Best Suited For?

This experience appeals most to adventurous travelers eager to explore Iceland’s volcanic underground and blue fissures. It’s perfect for those who enjoy geology, unique landscapes, and don’t mind a bit of cold water—especially if you’re comfortable with swimming or snorkeling in a dry suit.

Highly recommended for small groups, curious explorers, and anyone seeking a memorable, off-the-beaten-path Icelandic adventure. If you love guided experiences with knowledgeable hosts, this tour checks all the boxes.

Final Thoughts

This combined lava caving and Silfra snorkeling tour offers a well-rounded journey into Iceland’s volcanic heart. You’ll explore underground tunnels, learn about geological processes, and float in one of the most pristine waters on earth. The guides’ expertise and the attention to detail—like free underwater photos and warm post-snorkel cocoa—add extra appeal.

While it’s a full-day outing, many find it worth the effort for the chance to see Iceland’s underground marvels and feel like a tiny speck floating between two continents. It’s especially suited for those who appreciate nature’s raw, volcanic beauty and are prepared for the outdoor conditions.

If you’re after a mix of adventure, education, and stunning scenery—all in one package—this tour delivers an unforgettable Icelandic experience.

FAQ

Is transportation included?
Yes, hotel pickup and drop-off are available if you select this option, making the day more convenient.

What should I bring?
Warm clothing, a change of clothes, and a towel are recommended. It’s best to dress in layers to stay comfortable in cold conditions.

Can anyone join the snorkeling?
Participants need to be comfortable in water and able to swim. Pregnant women and those with medical conditions or mobility issues should avoid this activity.

How cold is the water?
While the water temperature is cold—around 2°C—the dry suits provided keep participants warm and buoyant.

Are the guides knowledgeable?
Absolutely. Reviewers consistently praise guides like Weronika, Nebo, and John for their friendliness, patience, and expertise.

How long does the tour last?
The whole experience takes between 5 to 9 hours, depending on availability and group size.

What is the group size?
Groups tend to be small, usually 4-7 people, allowing for a more personal experience.

Is there an age limit?
Yes, participants must be at least 12 years old and meet certain size and health requirements.

To sum it up, this tour offers a fantastic way to see Iceland’s less accessible magic—volcanic caves and the stunning Silfra fissure—without sacrificing quality or safety. It’s ideal for curious explorers, geology lovers, and adventure seekers who want to add a truly unique memory to their Iceland trip.

You can check if your dates are available here: