Snorkeling and Lava Caving - Combo Tour - SC04

Black and Blue - Lava tube caving and Silfra Fissure

This tour will take you into the depths of Iceland, where you will see two wildly contrasting, yet equally beautiful natural wonders. From Reykjavik, we will take you to a lava tube cave, crafted centuries ago by a river of molten lava. There you will see Iceland’s dark underworld: most definitely one of its best kept secrets. This is contrasted by the icy clear waters of Silfra fissure, which will allow you to swim between Europe and America.

15% discount April with promo code: 15APRIL

Duration: ~8 hours

Pick-up: 09:00 - 09:30*

Available: All year

Age limit: 12 years

    Tour Highlights:
  • Snorkeling in Silfra
  • Lava Caving
  • Thingvellir National Park

Pick up: starts at 9 a.m. in Reykjavik

Prerequisites: Participants need to be comfortable in the water and be able to swim. You are unable to participate if you pregnant.

Height limit: 150 - 200 cm / 4'11" - 6'7" ft

Weight limit: 45 - 120 kg - 100 - 265 lb.

Included: Certified PADI Dive guide / Divemaster, all transfers, expert caving guide, all necessary snorkeling and caving gear and Silfra admission fee

Not included: Lunch. We will stop at a place where you can buy food (you can also bring packed lunch).

Bring with you: Warm and waterproof outdoor clothing, gloves, warm undergarments (fleece/wool), warm socks, a change of clothing (just in case).

Need clothing? Don’t worry, you can always rent sturdy hiking shoes, waterproof jacket and pants in the online booking process. We do not rent gear from location.

Silfra Fissure probably has the clearest water in the world. That‘s mainly because of the cold temperature and lava filtration. It‘s always cold, from 2°C – 4°C. The source is glacial water from Langjokull and on its travel It has to break through lava, so it gets filtrated on its way.

For further information:

24 990 per adult

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


Tour Description

lava cave icicles

If you are lucky, you get to see icicles in the cave.

This tour will allow you to see Iceland from a different perspective: taking you caving and snorkelling in areas of incredible natural beauty. From the crystal clear depths of the Silfra fissure, to the stunning rock formations of a lava tube cave, you are in for a truly incredible experience.

black and blue snorkeling in silfra

Snorkeling in crystal clear water.

Read full tour description...

We will begin by collecting you from Reykjavik and taking you on “the dark” part of the tour, where we will explore one of the lava tube caves close to Reykjavik. This remarkable experience will give you the perfect insight into how volcanic activity helped to form Iceland. A lava tube cave is a channel, through which lava used to travel beneath the Earth’s surface. Eventually, as the lava cools and the volcano ceases to be active, it will form a long round tube, which normally contain some absolutely stunning rock formations. We will travel to either Leiðarendi Cave or Gjábakkahellir, depending on the season, but don’t worry both offer majestic sights and rock formations that you will never forget.

From there we will travel to the heart of Thingvellir National Park, where you will see the remarkable Silfra Fissure. Silfra is an underwater gap, which lies between the tectonic plates of Europe and North America, meaning that you will be snorkelling between two continents! Silfra, is also filled with filtered glacial water, which makes it the clearest water, which you can find anywhere in the world. Underwater visibility stands at over 100m, meaning that as you drift through the deep blue water, you will see the stunning natural landscape in all its majestic glory.

Our certified guide, will equip you with a dry-suit, (the glacial water is around 2-4 degrees) and then guide you through Silfra: consistently described as the greatest dive site in the world. The clarity of Silfra’s water also makes it the perfect place to take some of the most incredible pictures that you will ever see: combining light and dark, rock and water, excitement and natural beauty, this tour is a must for anyone visiting Iceland.

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.

Disclaimer: all snorkeling trips undertaken are the responsibility of its participants. Extreme Iceland does not assume any responsibility for accidents which 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 inherit risk.

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