Silfra Fissure Snorkeling + Lava Tunnel Tour – SuperSaver Combo

Two Iceland wonders, one day, serious cold. This Raufarhólshellir lava tunnel + Silfra fissure snorkeling + Þingvellir stop combo is built for people who want the geology hits without adding extra days. You’ll walk through underground lava formations, then float in crystal-clear water between the North American and Eurasian plates.

I really like that the tour includes the caving and snorkeling gear, so you’re not hunting for rentals at the last minute. I also like the little extras that make the day feel smoother, like complimentary underwater photos plus hot chocolate and cookies after you get out.

One drawback to consider: cold-weather timing and suit-fit can make the process feel hectic. Some people report delays, and in winter the dry-suit routine can be fiddly if your group is getting split or packed too tightly.

Key things that make this tour worth your attention

• Two geology sites in one long day: underground lava + snorkeling at Silfra + Þingvellir National Park
• Gear is included: you get the caving and snorkeling equipment so you can travel lighter
• Small-group feel: the tour caps at 18 people, and guides often split groups for managing the water time
• Photos are part of the package: your guide takes complimentary underwater pictures after the swim
• Cold is the main opponent: you’ll spend real time in suits before the water, so plan for dryness and warmth

Raufarhólshellir lava tunnel: walking through Iceland’s plumbing

The day starts at Raufarhólshellir, a lava tunnel where you’ll trade daylight for a ceiling of rock. This is one of those places where you can feel the scale of past volcanic activity with your own knees on the ground. Your guide leads you through colorful underground walls, odd rock shapes, and the kind of eerie light that makes you look around without meaning to.

What helps is the pacing and instruction. The tour is designed for people with at least moderate fitness: you’re not just standing still. Expect crawling/footwork through uneven surfaces and a lot of “watch your step” moments. You’ll also learn the how-and-why behind lava tubes, not just get a list of facts.

I’ve seen a pattern in guide praise for this part of the day. People name guides like Jonas and Apollo for giving fun, clear explanations underground, and Kevin for safety-focused instruction. Others mention Oliver for an informative tone that keeps the group moving and engaged.

What to watch for underground

• Wear warm base layers even if the outside is mild. Underground temps can feel cooler, and you’ll be moving in layers.
• If you’re short on patience for long gear-up moments, plan to “stay calm” at the start. Lava caving is active, but the setup takes time.

Þingvellir National Park stop: the UNESCO layer that ties it together

After the tunnel, you’ll get a break for lunch (own expense), then head to Þingvellir National Park. This part matters because it connects the dots above ground. Þingvellir is a UNESCO World Heritage Site, and it’s famous for the tectonic plates meeting in a visible way.

Even if you’ve already seen photos of Þingvellir, timing on this tour can change how it feels. You’re going from underground (stark and close) to open country (bigger and windier). That contrast is a big part of why this “two-in-one” combo works for limited time. It’s not just checklists; it’s a story of plates and volcanic forces showing up in different forms.

Lunch reality

Lunch isn’t included. You can bring a packed lunch or plan to buy food at designated stops. On days when schedules run long, a missing bathroom break can become the main issue, so bring a plan for that even if you’re not the type to overthink tours.

Silfra fissure snorkeling: floating between continents

Now for the reason most people book: Silfra fissure snorkeling. You’ll slip into snorkeling gear and go into the underground waterway where you drift between the tectonic plates that separate North America and Eurasia. The wow factor here is clear water and a sense of being suspended in something ancient.

Instruction is also part of the value. You get PADI-certified divemaster guidance, and the guide teaches you how to move with the current instead of fighting it. That’s not just comfort. It helps you actually enjoy the experience, especially when you’re wearing a dry suit that makes your range of motion feel limited.

People often describe the water as extremely clear, with visibility that lets you see far ahead. One recurring theme in strong feedback: guides take time to talk through safety and technique, and that makes the cold feel manageable.

In January and other cold months, plan for the wait

The water itself is only half the challenge. The other half is getting suited up, waiting your turn, and dealing with the “frozen suit” feeling. Some winter reviews mention that dry suits can be challenging to put on and that there can be a sense of waiting before you get in.

That’s why your preparation matters. Bring the warm layers listed by the operator. The more insulated you are before you zip up, the less miserable you’ll be during that waiting window.

Gear and photos: what’s included, what to pack, and what can ruin your day

This combo includes all necessary caving and snorkeling gear, and that’s a real money-and-stress saver. You won’t need to figure out dry suit rentals, snorkel gear, or tunnel gear logistics on your own.

Here’s what you still should bring, because the tour won’t solve everything:

• Warm base layers
• Towel
• Change of clothes
• Thick socks
• Gloves and a hat (help a lot before you’re in the water)
• Good hiking shoes

Also:

• Snorkeling masks can’t accommodate glasses. If you need corrective vision, you’ll need contact lenses or your own setup arranged in advance.
• You must be able to swim.
• There’s a weight limit of 45–120 kg and a height range of 150–200 cm.

Dry suit comfort and fit: why one small problem can snowball

Several reviews highlight the same weak point: suit fit. On good days, you barely notice the gear beyond limited movement. On bad days, people report damp underlayers, suit zippers or undergarments not functioning, and even leaks during the swim.

So here’s practical advice: when staff fit you, say something right away if anything feels wrong. Don’t wait until you’re in the water. You want a secure suit fit and working seals before you start floating.

Complimentary underwater photos

Good news: you’re supposed to get complimentary underwater photos taken by your guide. In many cases, people love these because it captures that once-in-a-lifetime moment without you needing a waterproof camera plan.

But don’t ignore the risk factor. A minority of reviews mention photo issues or missing photos for some groups. Your best move is to ask your guide early how photos work for your group and whether you’ll have your turn after the water time.

The full-day schedule: timing, transfers, and how to keep your sanity

This tour runs about 10 hours. It also has a maximum group size of 18 people, which is good for managing gear and keeping everyone on track.

You may have a pickup option from downtown Reykjavik (find the closest pickup point from the operator’s list). Pickup can take up to 30 minutes, so be ready at the selected location on time. If you don’t choose pickup, you’ll meet your guide and group at Raufarhólshellir.

Where this combo can feel stressful is between activities. A few people describe long waits—such as sitting at a bakery or losing time before snorkeling. Others mention that their reservations or start times shifted in a way that wasn’t clear at booking.

How to reduce the friction

• Build a flexible mindset. This is a long day and weather can shift timing.
• Pack a small snack and water if you can. Lunch is not included, and you may not want to bet your energy levels on timing.
• If you have bladder/bathroom needs, plan for that during breaks. One review complaint was specifically about waiting with no bathroom access, which is the kind of annoyance you can avoid by planning ahead.

Price and value: is $212.93 for two big experiences fair?

At about $212.93 per person for a full day, you’re paying for three major ingredients:

1) Guided lava tunnel experience in Raufarhólshellir

2) Guided snorkeling at Silfra with certified instruction

3) Þingvellir National Park time (UNESCO stop)

The strongest “value” argument is gear inclusion and the fact that this is a two-in-one structure. You aren’t paying separate transport and setup fees for snorkeling alone plus an additional caving tour plus Þingvellir. If you’re on a tight Iceland schedule, bundling saves time and mental effort.

That said, the weak link is consistency. When suit fitting is smooth and scheduling is tight, this combo feels like a high-value day. When people hit problems—wet suits, leaks, or long waits—it can feel expensive.

My take on the value equation

If you’re prepared for cold and you communicate quickly if fit or timing feels off, you’ll likely get what you paid for: two of Iceland’s most distinctive geology experiences in one day.

Who should book this, and who should skip it

This tour is for people who can handle cold-water snorkeling and underground walking. Your required baseline:

• Moderate physical fitness
• Age 12+ (under 18 must be accompanied by a parent or adult guardian booked on the same tour)
• Must be able to swim
• Fit within height and weight limits
• Signed medical clearance if you have conditions listed in the snorkeling handbook (asthma, diabetes, high blood pressure are examples of conditions that may require a doctor’s approval)

Pregnancy is a no for the snorkeling portion because of the risk of cold water entering the suit.

Best fit

• Families and couples who want the Iceland geology highlights without splitting into multiple days
• Travelers who don’t want to manage separate gear and meeting points for snorkeling
• People who like guided instruction and want a team to help with safety and photo capture

Not a great fit

• Anyone who can’t tolerate getting cold for extended periods while suited up
• Anyone who struggles with suit-fitting or hates the idea of dry suits and limited mobility
• People needing eyeglass accommodation for snorkeling masks (masks can’t be adjusted for glasses)

Should you book the Silfra Fissure Snorkeling + Lava Tunnel Tour?

If your goal is maximum geology per day, I’d say yes—with eyes open. The upside is real: you get a lava tunnel adventure, a UNESCO stop at Þingvellir, and snorkeling at Silfra with guided safety and complimentary underwater photos. Many guides earn strong praise for clear instruction and keeping people safe and comfortable, including names like Siggy (snorkeling praise), Taz (snorkeling preparation), and several lava tunnel guides such as Jonas and Apollo, Oliver, Kevin, and Birka.

But I’d only book if you’re prepared for the cold-water logistics. Dress for warmth, bring a change of clothes, and be ready for the dry-suit routine. If you’re the type who gets stressed by waiting time, have bathroom needs you can’t ignore, or you’re worried about suit leaks, then you’ll want to think carefully and ask questions before your swim.

FAQ

Is pickup available from Reykjavik?

Pickup is offered if you select the Reykjavik transfer option. Pickup details are based on the closest pickup point to your accommodation, and the pickup process can take up to 30 minutes, so be at your pickup location at the start time.

How long is the tour?

The total duration is about 10 hours.

What’s included in the snorkeling and caving gear?

All necessary caving and snorkeling gear is included, so you don’t need to bring or rent equipment for the tunnel and the Silfra water activity.

Is lunch included?

No. Lunch is not included. You can bring a packed lunch or purchase food at designated stops during the day.

Will I be able to wear glasses for snorkeling?

Snorkeling masks cannot accommodate glasses. If you need vision correction, you should arrange contact lenses.

What are the age and fitness requirements?

The minimum age is 12. Travelers should have a moderate physical fitness level. Participants under 18 must be accompanied by a parent or adult guardian booked on the same tour.

Are there weight and height limits?

Yes. The weight limit is 45–120 kg, and the height limit is 150–200 cm.

Can pregnant travelers join?

Pregnant women cannot participate in the snorkeling portion due to the risk of cold water entering the suit.

If you want, tell me when you’re going (month matters a lot for suit comfort) and whether you’re doing the Reykjavik pickup, and I’ll help you plan what to pack and how to time your day around this 10-hour schedule.