Reykjavik: Silfra Fissure Snorkeling & Lava Tunnel Combo

Snorkel between continents then wander ancient lava tunnels near Reykjavik

You’ll step into Iceland’s raw heart: first wandering Raufarhólshellir’s ancient lava tunnels with a local guide, then floating between continents in Silfra Fissure’s crystal water. Expect cold cheeks, laughter over hot chocolate after snorkeling, and a few moments of pure quiet beneath the surface that might stick with you long after.

Options for this experience

4 options

From US$ 201 per person, depending on the option and date you choose.See dates & book

Meet-on-Location (Self-Drive) 09:30 Guide in English Winter season, September 1 to May 31: Driving yourself? Meet us at each location. The first meeting point is the Lava Tunnel at 9:30; snorkeling starts at 13:30.

Self-Drive: meet at the location Available from 1 Jun 2027 Guide in English Summer, June 1 to August 31: Driving yourself? Meet us at each location.

Reykjavík Transfer 08:00 Guide in English Winter, September 1 to May 31: No car required. We will pick you up, and pickup is included.

Reykjavik Summer Transfer Available from 1 Jun 2027 Guide in English Summer, June 1 to August 31: No car required. Pickup is included, and we will collect you.

None of these options right for you? See 3 alternatives ›

Step-by-step itinerary

Lava tunnel and Silfra snorkeling

• Explore Raufarhólshellir lava tunnel
• Travel to Þingvellir National Park
• Snorkel in Silfra Fissure

What’s included

Your day includes certified divemaster-led Silfra Fissure snorkeling (with free underwater photos), all caving and snorkeling gear provided onsite, entry to Raufarhólshellir lava tunnel with local guide stories along the way, optional Reykjavik pickup and dropoff for convenience between sites, plus free wi-fi onboard the transfer vehicle. After braving the cold water you’ll warm up with hot chocolate and cookies before heading back toward town.

Times

• Every day 08:00 09:30

Another time? ›

Before you book

Group Up to 28

Live guide English

Meeting point and pickup Hotel pickup is optional; you can also go straight to the meeting point. Ends back at the starting point. You can choose from 24 pickup points.

Book up to 2h before

Ages Adult (12 and older) · Under 12: can't be booked

Cancellation and refunds Free cancellation up to 24 h before the start. After that, no refund. It may be canceled due to bad weather. If that happens, you're offered another date or a refund.

Good to know

Moderate physical effort Not recommended with back problems

Operated by Arctic Adventures

Prices and times updated today

Need assistance?Message us on WhatsApp or by email›

Traveler reviews

4.66 ★★★★★ Excellent 186 verified traveler reviews 78% rated it 5 stars

5 ★ 146

4 ★ 26

3 ★ 8

2 ★ 2

1 ★ 4

Read all the reviews ›

The experience

We ducked out of the van into a drizzle that felt like it might turn to sleet any minute, classic Iceland. The drive from Reykjavik was short enough for my coffee to stay warm, but long enough for our guide, Jón, to tell us how Raufarhólshellir was formed (something about molten rivers under our feet thousands of years ago). Inside the tunnel, you could actually feel the damp cold settle on your skin. The rocks were slick and streaked with colors I didn’t expect: reds and greens, almost like someone had painted them. Jón’s headlamp flickered once and we all stopped breathing for a second before he laughed it off. I liked how everyone moved quietly, just boots crunching on old lava and someone’s camera clicking now and then.

The real reason I booked this combo tour was Silfra Fissure snorkeling. I’d read you can float between tectonic plates here (North America on one side, Eurasia on the other), but it still felt unreal pulling on the dry suit while Þingvellir’s wind whipped around us. Our divemaster Anna checked everyone’s zippers and cracked a joke about “Icelandic summer” (it was maybe 7°C). The water was so clear it almost messed with my depth perception. You look down and it’s just blue forever. Cold doesn’t really describe it, my lips went numb in seconds, but drifting through that gap, watching sunlight ripple over volcanic rock, I forgot about everything else. Anna snapped photos underwater. I probably looked ridiculous but didn’t care.

Afterward there was hot chocolate waiting (honestly, best part after you can feel your fingers again) and some cookies that tasted way better than they should’ve. People chatted about where they were from. Someone tried to pronounce Þingvellir properly and failed spectacularly. I still think about that moment underwater sometimes (how quiet it was except for my own breath echoing in the mask). You know?

Top questions

What happens if it rains?

It may be canceled due to bad weather. If that happens, you're offered another date or a refund. Free cancellation up to 24 h before the start.

How far is Silfra Fissure from Reykjavik?

Silfra Fissure is about 45 minutes’ drive from Reykjavik.

Is hotel pickup included in this tour?

Yes, there’s an optional Reykjavik transfer with pickup and dropoff available.

Do I need previous snorkeling experience?

No prior experience is required but you must be able to swim.

What should I bring for the day trip?

You should bring warm outdoor clothing, thermal underwear, gloves, hat, hiking shoes, towel, a change of clothes, and packed lunch.

Can children join this Silfra Fissure snorkeling tour?

The minimum age is 12 years old. Those under 18 must be accompanied by an adult booked on the same tour.

Are glasses allowed under the snorkeling mask?

No. If you need vision correction bring contact lenses or your own prescription mask.

Is hot chocolate included after snorkeling?

Yes! Hot chocolate and cookies are served after your snorkel at Silfra Fissure.

Is this day trip suitable for people with medical conditions?

Certain conditions require doctor approval. Check the provided handbook before booking.