Snorkelling & Lava Caving Adventure From Reykjavik

Silfra is the only place on earth where it is possible to swim directly between two tectonic plates, the North American and Eurasian.
Many of the rocks in Silfra Fissure are blanketed with a unique and luminous green algae known as 'Troll Hair'.
The rock patterns and formations in Iceland's lava tubes defy the realms of the imagination.
Historically, those banished to outlawry used to use Iceland's cave systems as shelter and even make-shift homes.
Silfra Fissure requires a drysuit to beat the cold, which averages out at between 2-4°Celsius (35-39° Fahrenheit).
Silfra boasts many shades of blue, some aquamarine and pleasant, others dark and ominous.
Based on 8 traveller reviews

Jump into the deep end with this fantastic snorkelling tour in the glacial spring, Silfra Fissure, the gorge between the continents, as well as explore the dazzling interior of one of Iceland's famous lava caves. This is the perfect tour opportunity for eager adventurers looking to fit multiple activities into a single day. 

You will first be picked up by your experienced guide from your accommodation in Reykjavík and driven roughly forty minutes towards your destination; the UNESCO World Heritage Site, Þingvellir National Park. Þingvellir is culturally important to Icelanders given that this is the site where the first democratically elected parliament on earth, the Althingi, was also established in 930 AD.

Thingvellir is also a geological marvel; situated on the Mid-Atlantic Ridge, it is one of the only places on the planet where one can see the North American and Eurasian tectonic plates exposed from the earth. It is also the only place where it is possible to snorkel directly between them; this brings us to our first activity of the day, snorkelling in Silfra Fissure!

Silfra is a glacial spring, famed for its crystal clear visibility, dramatic scenery and wealth of colour. To snorkel in the fissures, you will first listen to a briefing that details the location, as well as how to use the equipment, and will provide facts about the snorkel site itself. Thankfully, there is a light current running through Silfra, meaning it never freezes over.

Once you have set foot back on dry land, you will continue towards the hidden underworld of a typical Icelandic lava cave; Leiðarendi. Stepping into this dark and subterranean world, you will immediately be taken by the peculiar rock formations and gorgeous colours that lay imprinted on the cave walls. 

Make sure you're wearing some good shoes, as the cave requires a little clambering and climbing, and be sure to listen eagerly to your guide as they discuss the historical and geological relevance of Icelandic cave systems. When your time in the cave is over, you will make the return journey back to your accommodation in the capital.

So what's the delay? Hurry now and you too can experience the wonders of both snorkelling and lava caving at two of Iceland's most exciting attractions.  

Quick facts

Tour information:
  • Available: All year
  • Duration: 8 hours
  • Activities: Snorkelling, Caving
  • Difficulty: Moderate
  • Minimum age: 12 years.
  • Languages: English
  • Highlights: South Iceland, Þingvellir, Leiðarendi Cave, Silfra, Gjábakkahellir
Pickup information:
  • Pickup time : 09:00

Please be at your pickup location in time for your departure. Should your pickup location be at a bus stop and you need assistance finding it, seek guidance in your Hotel's reception or contact your tour provider directly.
  • Small group guarantee

  • Pick up from Reykjavik with return transfer

  • An expert caving guide

  • Experienced snorkelling guide (Dive Master / Instructor)

  • All necessary snorkelling gear, including a specially made down suit to keep you warm in the glacier water

  • Specialized caving gear, including a helmet and a headlight

  • Hiking shoes (can be rented as an extra)

  • Food & drinks

What to bring:
  • Warm and waterproof outdoor clothing.

  • Waterproof pants and jacket.

  • Packed lunch.

  • Head-wear.

  • Gloves.

  • Good hiking shoes.

  • Towel and a change of clothing.

Good to know:

The following regulations must be met:

be at least 150cm tall

be at least 45kg

be at least 12 years of age

be able to swim independently without a life jacket

be healthy

be ready to wear a sometimes tight & constricting dry suit

not be pregnant

be able to understand instructions in English


Amazing experience! Snorkeling in Silfra was the high light of the day. Visiting the lava tube was also interesting. The tour company made sure everyone was comfortable on both excursions. Great value for the price!

Great adventure tour. We were a bit scared that it would be too hectic to do this in one day but it was perfect. Highly recommended and great value!

This was a great tour. Our guides were really friendly and knowledgeable. Caving was a lot of fun (and a little physically taxing so avoid if you have leg/foot injuries) and the experience of snorkeling in Silfra was amazing and something that is not to be missed if you have the opportunity.

What a fantastic day, amazing view and visibility in Silfra. As a first time snorkeller it took a little bit of time to get used to the dry suit and equipment but the time spent in the water made up for it. The caving part was informative, got to see all those things that you learn about in school, only this is more interesting with amazing colours and formations. Our guide was friendly and patient with our silly group, and knew the answers to all the questions we asked, regardless of topic.

Caving and snorkeling was an amazing experience. Our tour guide Teitur was the best guide ever ! He made the experience even more enjoyable. We went snorkeling first to experience the morning colours of Silfra. The dry suit was extremely uncomfortable for me but Jack, the guide for snorkeling, put me at ease with my many concerns ! He was so helpful & friendly. The colours of Silfra was beautiful. After, we went caving with Teitur which was just epic - an amazing experience & I was buzzing after we emerged from the cave. I would recommend taking durable, extra clothes & an underwater camera

Putting on the suit in the cold, was the worst, but the underwater view was well worth it, even when a bit of water got into my suit, the proffesionals were there to guide me and asure me i would be fine. The hot chocolate helped too! Wal was our tour guide, and he was awesome! Thanks to the "Guide To Iceland" Crew for one of the best experiences in my life!

The water was very cold but the scenery was incredible. I very much enjoyed seeing the two continents meet. The lava tube was very interesting too. I can recommend this tour.

Awesome excursion! About 30-40 minutes "actual" time in the water. Visibility is amazing! The guides (Wal, Juan, and Hermes) are great! The scenery around the lake is pretty cool. The worst part was putting on the suit outdoors as it was very windy and cold. The best part was jumping in the water and getting to experience snorkeling between the two continents. No need to clear your snorkel as the water is so clean you can just drink any water that gets in. The only body part that really gets cold would be your lips. The less you move your hands, the warmer they stay. Takes about an hour to get there from Reykjavik. The caving tour is cool. However, you go to Leidarendi cave and not Gjábakkahellir...At least in the winter time. The good thing is that Leidarendi is only 20 minutes from Reykjavik.

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Guide to Iceland does not add any fees, and as such, can not be liable for any accidents, losses, injuries, damages, delays, expenses due to any action or inaction on the part of the operator, guide or his/her services. As the terms and conditions of each tour operator may vary, please read the terms and conditions of each operator you purchase a tour from.

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Guests/Clients are advised that all outdoor activities are undertaken entirely at their own risk and they must behave in a fit and proper manner at all times in accordance with Arctic Adventures or their partners guidelines and must take proper responsibility for their own safety. All adventure tours and activities carry an inherent risk and Arctic Adventures does not assume any responsibility for accidents that are caused by its customers or can be traced to their own actions. With the purchase of your trip you agree to these conditions, understand its implications and accept responsibility for your participation in your tour. Depending on your chosen trip you may be requested by Arctic Adventures or its partners to sign an additional liability release on location prior to certain excursions. 

Cancellation policy:
You can cancel your day trip with out further costs with one weeks notice. You can cancel your multi day adventure or trek with out further costs with two weeks notice. Depending on your trip you may be able to get partly refunded for your trip down to 48 hours before your trip. But less then 48 hours before your trip no refunds are made. If you are booking a group then the final number of participants given 48 hours before the trip is undertaken is the number of participants you will have to pay for and hence no refunds are made for cancellations made less then 48 hours before a trip. 

Guide to Iceland cancellation policy:

Guide to Iceland charges a flat fee of 5000 ISK of each customer for online cancellations. 

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Snorkelling & Lava Caving Adventure From Reykjavik

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