Snorkelling Silfra & Lava Caving Day Tour

The smooth rock cooled under intense heat.
A staircase escorts you down into Silfra fissure in Þingvellir National Park.
Vivid colours in Leiðarendi cave come from different elements in the earth.
The light at the end of the tunnel in Leiðarendi cave.
The surface of Silfra fissura, reflecting like a mirror.
Springs and ravines snake across Þingvellir National Park.

Explore the hidden wonders of Iceland with this snorkelling and lava caving combination tour. This opportunity is not to be missed by the adventurous seeking unique experiences.

The tour begins when you are picked up in the morning from Reykjavík. You will be driven for forty minutes or so to Þingvellir National Park, one of the most famous sites in Iceland. Its name means ‘Fields of Parliament’, as it was the original site of the world’s longest-running parliament, formed in 930 AD.

Framed by the North American and Eurasian tectonic plates, Þingvellir is located right in the middle of the Mid-Atlantic Rift. The geological activity caused by the plate movement means that the park is filled with ravines, and due to the groundwater travelling through the lava, many of these are natural springs.

The one that you will snorkel in is called Silfra. Before entering the water, your guides will tell you about the route and safety and gear you up in all the necessary protective equipment. 

As soon as you get into the ravine, the first thing you will notice is the clarity. Due to the long filtration process, as the water travels through the porous lava rock before emerging into the spring, it has had all the sediment removed from it. It is therefore drinkable, and the visibility is over 120 metres.

For up to around fifty minutes, you will be guided through Silfra by a gentle current allowing for plenty of time to marvel at the vivid blues, plunging depths, and fascinating geology without getting too cold. Even if the chill does get to you, there is hot chocolate and cookies at the end of the tour to warm up with. 

Following your time at Silfra, you will head to the Reykjanes Peninsula for the caving component of this tour. This part of Iceland is renowned for its barren landscapes, endless lava fields, and many volcanoes.

The cave you are heading to is called Leiðarendi, which sits at the base of the Bláfjöll mountain range. Formed by two eruptions a millennium apart, it is a perfect example of the network of tubes that snake beneath Iceland’s lava landscapes.

You will gear up with a helmet and light before heading into Leiðarendi’s depths. Within the cave, you will notice beautiful colouration, caused by different elements churned up in the eruptions. There are also features such as stalagmites and stalactites to admire and photograph—just be careful not to touch them, as they will never grow back if broken.

This particular lava tube is great fun to traverse as it is entirely natural. That means there will be certain points where you have to do some clambering and crawling, adding to the adventure.

Do not miss this opportunity to explore Iceland, beneath the surface of its water and lava landscapes. Check availability by choosing a date.

Quick facts

Tour information:
  • Available: All year
  • Duration: 8 hours
  • Activities: Snorkelling, Caving, Sightseeing
  • Difficulty: Easy
  • Minimum age: 12 years.
  • Languages: English
  • Highlights: Þingvellir, Reykjanes, Leiðarendi Cave, Bláfjöll, Silfra, Þingvallavatn, Mosfellsdalur, Mosfellsbær
Pickup information:
  • Pickup time : 07:00 08:00, 09:00,

Please note that pick up begins 1,5 hours earlier than the tour time. 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.
  • Free hotel pick up and return

  • Guided snorkeling tour

  • Guided cave tour

  • All necessary equipment

  • Hot chocolate and cookies between Snorkeling in Silfra and Lava Caving

  • Entrance fee into Silfra

What to bring:
  • For snorkeling:

  • Long thermal underwear

  • Thick socks

  • Suitably warm clothes for the weather of the day

  • For caving:

  • Good shoes (e.g. hiking boots)

  • Water resistant pants

  • Extra layer of warm clothes

  • Snorkeling Silfra Medical Statement | The Medical Statement Form will be emailed to you when you have completed your booking

  • Contact lenses if you wear glasses

Good to know:

This snorkelling part of this tour is not suitable for pregnant women. Please note that should you have any neurological, circulatory or respiratory problems or underlying diseases, battled any illnesses or have any physical problems you might have to turn in a physicians allowance to participate in this tour. If you are over 45 and partake/have partaken in pipe smoking or heavy alcohol intake, you might need a medical waiver. If you are over 60 years of age, you might need a medical waiver. Please contact the operator for further information and application papers.

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Free cancellation
Free pickup
No credit card fees
No booking fees
Best price guaranteed & supplied by DIVE.IS - Sportköfunarskóli Íslands

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