Snorkel through lava filtered water, walk where lava flowed

On this must-do winter tour, you will snorkel through one of the world’s most fantastic snorkeling and dive sites, Silfra, and go hiking through a lava tube that was created thousands of years ago by a river of red glowing lava! Additionally, you will learn about and observe the Northern Lights in a way that is not possible anywhere else. This tour combines our top rated Silfra Snorkeling Tour with a caving tour through a lava tube and a visit to the unique Aurora Basecamp.

This tour is only offered with pick up from Reykjavik and is in two parts, snorkeling in the morning and caving and learning about the Northern lights at night. You will have plenty of time in Reykjavik between pick ups to relax and eat dinner.

We start with the snorkeling tour. You will see a feature of tectonic activity from a most unusual perspective: underwater! Silfra is a fissure created by the Eurasian and North American tectonic plates pulling apart. The fissure is filled with crystal clear glacial water that has been filtered underground for decades. This is an underwater scene unlike anywhere else on earth. You can read more about the Silfra snorkeling tour here.

After the snorkeling tour we will drop you off in Reykjavik around 14.00 / 2PM and you can have a relaxing afternoon in Reykjavik before being picked up again at 20.00 / 8PM. The second part of this combo tour involves caving and learning about and observing the Northern lights at Aurora Basecamp.

The lava tube you will visit is called Leiðarendi cave. Leiðarendi displays the typical features of this most common type of lava cave in Iceland. It is full of utterly weird and wonderful rock formations as well as a splattering of amazing colors. Even though at some points inside the cave we will have to climb and crawl a little, this cave tour is an easy one that can be undertaken by everyone who feels comfortable in confined spaces and is fit to take a short hike. Please make sure to bring good shoes.

Aurora Basecamp is a Northern Lights Observatory where you will experience a unique indoor simulation of the Northern Lights in the Dark Park as well as learn about hunting them in the Icelandic sky. At Aurora Basecamp you will also get tips on how to spot them, how to take photos of them on your camera and much more. You can relax in front of the fire in the cozy lounge at Aurora Basecamp or buy a log and sit outside by the fire waiting and viewing the Northern lights.

If the forecast is not Northern lights friendly, you can still see them simulated in the awesome Dark Park installation. After a visit to Aurora Basecamp you will be fully prepared to hunt for them yourself in your rental car on subsequent nights should the forecast be more favorable.

The Silfra Snorkeling, Caving & Northern Lights Tour is a great combination tour for those who want to make the most of their time in Iceland. Please note that the caving and Northern lights tour is operated by our trusted sister company. They have years of experience and fantastic, knowledgeable guides .

Our Souvenirs can be purchased in your booking process by selecting them under "Extras". If the Souvenir you are looking for is not listed below, please contact us or leave a comment in your booking and we will bring it on tour with us.

mrpletcher 01.10.2019

"What an amazing experience! While we were super excited about the idea of doing this, the reality was a bit daunting. It's cold, it's a bit confining, but wow was it worth the slight discomfort. Our guide Tanya was amazing; personable, funny, helpful, calming, I could go on. As a quasi-seasoned snorkler, I can say that you will never see anything like this anywhere. Do this tour with if you have the chance."

DIVE.IS is rated No. 1 of all 426 Tours from Reykjavík

Tour Details

  • All year round, daily. Don't see a tour time that works for you or want to book this tour for a special occasion? Contact us to book this tour as a Private Tour!

  • Snorkeling Silfra Tour is in the morning

  • Cave and Dark Park tour is in the evening

  • Approx. 3 hours at Silfra, 1 hour cave tour & 1 hour visit to Aurora Basecamp. Appr. 3 hours driving.

  • Maximum 8 participants in caving tour

  • Maximum 6 snorkelers per snorkel guide

From ISK 23.890

Please bring:

  • Long underwear
  • Thick socks
  • Suitable clothes for the weather of the day
  • Good shoes (e.g. hiking boots)
  • Warm clothes for caving
  • Contact lenses if you wear glasses


  • Guided snorkelling trip
  • 1 hour guided cave tour with an expert local guide
  • All necessary equipment
  • Hot chocolate and cookies after the snorkeling trip
  • Hot chocolate after the cave tour
  • Entrance fee into Silfra
  • Aurora Basecamp fee

For your safety, all participants must:

  • have read, signed, and followed directions on the online Snorkeling Silfra Medical Statement (link provided in confirmation email) PDF

  • have our Snorkeling Medical form signed off by a doctor if they are age 60 or older PDF

  • sign our liability release form at the start of the snorkeling tour PDF

  • be at minimum 150cm / maximum 200cm

  • be at minimum 45kg / maximum 120kg

  • fit within our dry suit size chart PDF

  • be comfortable in water and be able to swim

  • be physically fit

  • be ready to wear a sometimes tight & constricting dry suit

  • be able to communicate in English

  • not be pregnant

  • be at least 12 years of age on the year and at least 45 kg / 99 lbs

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Your bookable extras

Experience the tour

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Guides on this tour


Thingvellir National Park
801 Selfoss

Aurora Basecamp Northern Lights Observatory

220 Hafnarfjörður

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