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Black & Blue - Caving & Snorkeling Tour

in Silfra, Thingvellir National Park

A one-of-a-kind underground adventure! Lava caving and snorkeling combo in Þingvellir National Park.

Caving Snorkeling
5.0 rating based on 9 ratings

Spend the whole day beneath the surface with our expert guides. We visit a historic lava-tube for caving and then head to Thingvellir National park to go snorkeling. Suitable for those in a good physical condition.

  • Availability

    All year

  • Duration

    8 am - 5 pm

  • Duration Overwrite

  • Level


  • Pickup


  • Meet on location


  • Min. Age

    12 years

  • Ratio


  • Departs from


  • Departs from Overwrite

  • Price from

    23.490 21.141 ISK

Tour highlights
Small Group Experience
Silfra Fissure
Þingvellir (Thingvellir National Park)
Snorkeling Tour
Caving Tour
Pick-up & drop off from Reykjavík
Certified PADI Dive guide / Divemaster
English Speaking Tour Guide
An Expert Caving Guide
All Necessary Snorkeling & Caving Gear
All Necessary Safety Equipment
Silfra Admission Fee
Hot Chocolate & Cookies
Free WiFi on Board Your Bus

This caving and snorkeling tour gives you an opportunity to experience Iceland from a new angle.

After we pick you up from Reykjavík we start with the black part of the tour by exploring a lava tube cave close to Reykjavík. This adventure gives you a great insight of the volcanic activities that have formed Iceland. Depending on the season we go either to Leiðarendi Cave or Gjábakkahellir, both caves are typical lava tubes that display the characterizing features that are common for this type of caves.

After we finish the caving, you will have a chance to grab some lunch between the two activities.

We will drive to Þingvellir National Park where Silfra fissure is found. Here we get ready to explore the blue by putting on a dry suit and other snorkeling gear needed. Your guide leads you through the marvels of this crystal clear water wonderland that is considered to be one of the best freshwater snorkeling places in the world.

Pick-up Information

Pick up: For those who have chosen to be picked up in Reykjavík, the pick-up time is at 08:00 am. Picking everyone up can take up to 30 minutes, your patience is greatly appreciated!
Available pick-up points: Arctic Adventures’s pick-up list.

Practical Information

Remember to bring: Warm and waterproof outdoor clothing, gloves, warm long underwear (fleece/wool), warm socks, a change of clothing (just in case).

What if I don’t own all of these clothing necessaries?
Don’t worry, you can always rent sturdy hiking shoes, waterproof jacket and pants in the booking process. We do not rent gear from location.


Participants need to be comfortable in the water and be able to swim. You are unable to participate if you are pregnant, due to the small risk of cold water entering the suit.

Weight limit: 45-120 kg
Height limit: 150 cm -200 cm
Age Limit: 12 years old minimum. Guardian’s approval needed for minors under 18.

Please note

Due to guide/customer ratio limitations and Þingvellir National Park regulations this tour sells out frequently, we recommend you book this tour well in advance.

We recommend bringing gloves to wear inside the cave as it can sometimes get a little cold.

How is it best to be ready for a pick-up for a tour with Arctic Adventures?

This is a great question. We ask all participants to be ready from the start of the pickup time indicated. This is because you may well be the first pick up of the day. Please be at your assigned location at the start time that you chose when booking the tour.

Here you should wait for your guide.

Have your email and phone number listed with us so we can contact you if we run into any trouble finding you.

View our pick-up locations in Reykjavík.

Can I drink alcohol before or during Arctic Adventures tours?

Before and during activities on the multi-day tours consumption of alcohol is prohibited. If we suspect that a participant is intoxicated, we will prohibit them from joining the activity.

After the activities of the day are finished, you are welcome to have a drink and relax.

Do you offer any family friendly tours, for younger children?

Yes, we do. Langjökull Ice Cave is a magical experience, the tour has no minimum age and is a wonderful option for the whole family. Whale Watching with our partner company Special Tours, has been a favourite with families traveling with young children, these guys have a great success rate in seeing whales (upwards of 98% in the summer time).

Another option would be the Landmannalaugar Safari on this tour you get to explore parts of the Icelandic highlands and bathe in natural hot springs. Most of our jeep tours are also suitable for children over the age of 6 years old. If you would like a nice and relaxing experience we would also recommend the Golden Circle & Secret Lagoon tour.

Can the itinerary for the tour change?

Your safety is our number one priority! Keeping this in mind, Arctic Adventures reserves the right to adjust the itinerary and/or take different routes depending on conditions. Please read more information in our cancellation policy.

Is there a guide on each Arctic Adventures tour?

Yes, there is a specially trained and certified guide on each of our tours. The only exception to this is for our self-drive tours.

All of our tours are guided in English.

What type of power outlets are used in Iceland? Do I need to bring an adapter?

The standard in Iceland is 230V and 50Hz and we use F-type power sockets and plugs, so you might have to bring an adaptor if you are visiting from UK, USA, Canada or other countries using a different voltage, Hz or plugs.

How are the tours rated in terms of difficulty?

Our tours are split into four different categories that help participants to understand what to expect from the tour. The categories are Easy, Moderate, Challenging and Demanding. Each tour is rated making it easier to find tours that suit you.

For further information about the difficulty ratings and descriptions.


What equipment do you provide for the lave tube caving trip?

We provide you with a headlight and a helmet.

What should I wear on a lava caving tour in Iceland?

Like always in Iceland, it’s best to dress in layers. Warm layers closest to you preferably wool/thermal underwear, pants sweater and on top waterproof outdoor clothing. We also recommend that you wear good hiking boots and gloves. Jeans have proven to be a bad choice.

What is the best way to prepare for the tour?

All relevant information for the tour can be found in our snorkelling handbook.

Can I bring my camera on my snorkeling tour?

Yes, you can bring a camera, but if it is not waterproof it will get ruined, so we would recommend that it is waterproof.

Where is the meeting point for the snorkeling tours at Þingvellir?

If you plan to drive and meet us on location, the meeting point is at the Silfra car park, in Thingvellir National Park.

GPS: 64°15’23.508″N 21°6’58.676″W

Note that the National Park charges a small parking fee of 500 ISK.

We kindly ask you to be at the Silfra car park 15 Minutes prior to your tour starts.

Do you offer photos from the snorkeling tour?

Our guides normally have an underwater camera and usually takes photos during the tour. If you are interested in photos please let your guide know before you go to the water.

You can then buy the photos from your guide at the end of the tour, for a price of 3 900 ISK, which includes all the photos from that day. Kindly note that photos cannot be guaranteed. Our customer’s safety and wellbeing is our first priority, and therefore the guide will focus on snorkelers as a priority when in the water and taking photo’s when everyone is comfortable.

Can I wear glasses on a snorkeling tour in Silfra?

Unfortunately, glasses don’t create a seal between your face and the mask. We recommend wearing contact lenses instead.

I am pregnant, can I participate in the snorkeling tour?

You are not able to participate in the snorkelling tour if you are pregnant.

Do I need to be able to understand and communicate in English in order to participate in the tour?

Yes, it is snorkelling that you can both understand and communicate in English in order to participate in the tour.

Can we do snorkeling and diving at the same time?

Some snorkelling tours match with a dive tour, and then you will be in the same area at the same time. You will, however, be in separate groups with separate guides, and won’t be in the water exactly at the same time.

Are there any weight restrictions to participate in the snorkeling tours?
The minimum height is:
  • 150 cm (4’9)
The minimum weight is:
  • 45 kg (99 lbs)

The maximum height is:
  • 200 cm (6’5)
The maximum weight is:
  • 120 kg (265 lbs)
Do I need to know how to swim in order to participate in the tour?

You need to know how to swim independently in order to enjoy this adventure.

What is snorkelling in Iceland like?

When snorkelling in Iceland you will be wearing a dry suit, hood and gloves made of neoprene, along with fins, mask and snorkel. This equipment will make it not only possible but also very enjoyable, to stay in the water despite the low temperature. It is a fantastic experience.

Do I need any previous experience?

No, you don’t need any previous experience of snorkeling, but it is important that you can swim independently and that you are comfortable in the water.

What clothing should I wear?

Please wear or bring some long underwear and some warm socks. Wool or fleece is the best material to wear. You will be wearing your long underwear and warm socks under the dry suit.

Will I stay dry in the water?

The idea behind the dry suit is that it should keep your body dry. We are using top quality dry suits from respected manufacturers. It is good to know that there is always a small risk that water can enter the dry suit. This is not dangerous, but can feel a little cold. We recommend you bring a spare set of clothes and a towel, just in case. Kindly note that your hands and face will get wet, which is completely normal and not actually that cold.

What equipment do you provide?

We provide undergarment and neoprene dry suits from Waterproof and 0’Three. We also provide neoprene hood and neoprene wet gloves to protect your head and hands from the cold. You will also be given fins, mask and snorkel.

How many snorkelers will be on each tour?

Our client to guide ratio is one guide for every 6 snorkelers.

What is the temperature in Silfra Fissure?

The water temperature is 2-4 degrees C (35-37 degrees F) all year round. The water comes from the Langjökull glacier which keeps it nice and cool, and very refreshing!

What kind of dry suits do you provide?

We use high quality neoprene dry suits from Waterproof International and O´Three.

All our tours are undertaken on the responsibility of its participants. Arctic Adventures does not assume any responsibility for accidents that are caused by its customers or can be traced to their own actions. Participants have to sign a waiver before undertaking all trips stating that they realize that all outdoor activities carry an inherent risk.


Exclusive Online Discount

Bookings work for travel time 2018/11/01 - 2018/12/19

Save 10% - Discount added at checkout

Promotional code: NOV2018

Book this tour

Price from: 23.490 21.141 ISK per person.


If you are staying downtown Reykjavik please read this information about pickup.

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Black & Blue - Caving & Snorkeling Tour | Average rating: 5/5 based on 9 customer reviews

"Great experience!" | 5 stars By Christly 05/06/2018
We started off at the lava fields in Grindavík and were in the tubes exploring for about an hour. It wasn’t that cold in the tubes, luckily, but above ground it was extremely windy and cold. On the way out, we were given the option to crawl using an alternate pathway or to return the same way we entered. I opted to crawl and it was quite an experience. It narrows down to ~80cm but crawling through was pretty fun. After that, we stopped for lunch at Thingvellir and then headed to Silfra to get our drysuits on. The fissure was a beautiful deep blue and you can even drink the water that gets into your snorkel. I stayed completely warm and dry in the suit although some people got wet. Cookies and hot chocolate after to warm up we’re satisfying. Overall, great experience. I recommend!
"Black and Blue Snorkeling and Lava Cave Tour" | 5 stars By Nicole Roscow 01/06/2018
Excellent tour. The guide was on time picking us up from our hotel and took us to the lava cave where he explained how the caves are formed, some of the history of the cave, and pointed out the unique formations. The snorkeling portion was also amazing with incredibly clear water and beautiful colors underwater. I was nervous about being cold in the water but the dry suits kept me dry and decently warm! I wasn’t uncomfortable at all and the views were great. The guides and other people on our tour were also great, conversational and fun to be around. This is also something you can’t do without a tour guide so I definitely recommend it to experience even more of Iceland! Thanks Arctic Adventures!
"Incredible Tour!" | 5 stars By Jeana Beilstein 04/02/2018
I'd highly recommend this tour if you're in Iceland. It's truly breathtaking and worth the money! Brave the cold - you won't regret it! The tour guide were timely and super nice!
"Good time!" | 5 stars By Laurent LD 22/02/2018
We had a wonderfull tour with Thomas as great guide very helpfull and friendly. Getting down to the cave was athletic but unforgettable. As well the snorkelling. I recommend!
"Great Adventure" | 5 stars By Michelle 22/02/2018
One of our best snorkeling trips! It was a beautiful sunny day and the scene was incredible with snow on the stream bank. Take an underwater camera, the photo opportunities were numerous. Friends thought we were crazy snorkeling in Feb, but with the water and air being about the same temp, it was perfect. My only recommendation would be to bring a small foam pad to stand on while waiting to go down to the water, so not standing on the snow and ice.
"Amazing tour!" | 5 stars By Laura M 18/03/2018
We originally only had the snorkelling tour booked but were upgraded to the Black & Blue tour for an unexpected reason. We couldn’t be happier that we were! The caving experience was awesome! Added some extra adventure to our tour. The snorkelling tour was absolutely amazing! Our guide Andrea was awesome too. Very friendly and funny and we learned a lot from her. I would highly recommend this tour!!
"Black and Blue" | 5 stars By Fiona O'Neill 25/02/2018
This was one of the highlights of our week in Iceland, what an unforgettable day! Micah and Ronan were knowledgeable and very friendly. Some points - when we arrived at the lava tube, there were 2 other couples as well as us who didn't realise what this entailed - we all thought it would be walking through more cavernous spaces rather than crawling etc. It was a fantastic morning which we thoroughly enjoyed but more info beforehand would be beneficial. Also, overalls would be appreciated for going through the tighter spaces, so as not to rip clothing etc. Thanks again to the wonderful guides.
"By far the highlight of our trip!!!" | 5 stars By Ainsley Browne & Nerida Casey 14/03/2018
By far the highlight of our trip!!! Becca, our guide was fantastic. Friendly, informative and knowledgeable. Chris, our guide for the snorkeling was amazing, very comforting as we went went out of a comfort zone for this fantastic experience. We would, and have highly recommended this tour with Arctic Adventures.
"This experience was wonderful! " | 5 stars By Jade 28/04/2018
This experience was wonderful! Our guide was very informative and answered all of our questions and gave us great information. The lava caving was super cool and we had extra time before the snorkeling, so our guide took us to Thingvellir National Park to see a waterfall. The snorkeling was amazing and definitely nothing like I have done before. Our guide made us feel comfortable and made the experience so worthwhile. They treated us to hot chocolate and cookies after to top it off and keep us warm!
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