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Arctic Adventures Silfra Fissure

4.6
(
1112
)
・Tourist Attraction ・
Thingvellir National Park, 801, Iceland

Silfra Fissure is a unique geological feature located in Thingvellir National Park in Iceland. It is a rift between the North American and Eurasian tectonic plates, meaning these two massive sections of the Earth's crust are slowly drifting apart. This creates a stunning underwater landscape known for its crystal-clear waters, with visibility reaching over 100 meters. The water in Silfra comes from a nearby glacier called Langjökull. As it melts, the water travels through porous lava rock, which filters it and results in exceptional clarity and purity. The water temperature remains cold year-round, typically between 2°C and 4°C. Silfra is popular for snorkeling and diving because it offers an unparalleled experience of swimming between two continents. Divers and snorkelers can explore different sections of the fissure: Silfra Hall, Silfra Cathedral, and Silfra Lagoon. Each area provides breathtaking views of intricate rock formations and vibrant underwater landscapes. While the water is cold, the use of dry suits allows visitors to stay warm while experiencing this natural wonder. Silfra Fissure offers an extraordinary opportunity to witness geological processes up close in one of the world's most beautiful settings.

Hour
Monday: 8:00 AM – 7:00 PM
Tuesday: 8:00 AM – 7:00 PM
Wednesday: 8:00 AM – 7:00 PM
Thursday: 8:00 AM – 7:00 PM
Friday: 8:00 AM – 7:00 PM
Saturday: 8:00 AM – 7:00 PM
Sunday: 8:00 AM – 7:00 PM

The Area

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Arctic Adventures Silfra Fissure

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What other travelers are saying about

Arctic Adventures Silfra Fissure

It’s really not as cold as I thought it would be. I’ve never been to a place with better water quality than this. Tour guide James is very easy going, we didn’t really know how to swim and still comfortably finished the tour.

withacup
August 25, 2025
New York, NY

We had an amazing experience diving with Arctic Adventures in the Silfra fissure. The water was icy cold—around 2°C—but the visibility was absolutely incredible. We dove with Francesca, who was fantastic throughout the experience. Highly recommended!

Bar Arviv
July 3, 2025
New York, NY

This was our very first activity on Iceland. It was a rainy cloudy day. There were several companies at the meeting point and you can watch people getting suited up and unsuited while you are waiting. I was wearing a sweatshirt and sweatpants and was very comfortable in my drysuit. Btw, I would definitely go with a drysuit and not a wetsuit. The water is cold 🥶 and I can't imagine doing this in a wetsuit. Its quite the undertaking to get suited up and the guides do the best they can to keep you dry. That said we did have a couple people with leaks. Nothing huge, but small clothing areas got wet. Not pleasant certainly but its not the end of the world either. Our experience was really amazing, the water is super clear, visibility is i credible. We didn't see any fish but we also didn't expect any. As the guide explained if you see a fish they must have gotten lost lol. READ all that the company sends you! If you have health issues discuss it with them if need be. Everything is laid out. If your plane is delayed, you have 24 hours BEFORE the event to make changes. Our plane was delayed and I was ready to make phone calls. In the end we made it on time. Again, read the information you are sent!

Susanna Haynie
August 23, 2025
New York, NY

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Frequently asked questions

What is Silfra Fissure?

Silfra Fissure is a unique geological feature located in Thingvellir National Park, Iceland, where the North American and Eurasian tectonic plates meet. It is renowned for its crystal-clear waters and is one of the top diving sites in the world.

Why is the water in Silfra Fissure so clear?

The water in Silfra Fissure is extremely clear due to being filtered through porous underground lava rock from Langjökull glacier. This process takes decades, resulting in water with outstanding visibility of up to 100 meters.

Can you snorkel or dive at Silfra Fissure?

Yes, both snorkeling and diving are popular activities at Silfra Fissure. Snorkelers can float between two continents, while divers get a closer view of the fissure's underwater topography. It's important to book tours with certified operators as the conditions can be challenging.

What is the temperature of the water in Silfra Fissure?

The water temperature in Silfra Fissure remains between 2°C and 4°C (35°F - 39°F) year-round. Participants are provided with dry suits to protect against the cold during diving and snorkeling activities.

What makes diving at Silfra Fissure unique compared to other diving sites?

Diving at Silfra Fissure offers a one-of-a-kind experience due to its location between two tectonic plates and its stunning underwater visibility. Divers can touch both continental plates simultaneously, making it a truly unique geological experience.