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Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos
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Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos

4.8(5 reviews)
7 hour(s)
English (United Kingdom)
Hafnarfjordhur, Iceland

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Up to 24 hours

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Explore Þingvellir National Park, a UNESCO World Heritage Site

Snorkel in Silfra, a pristine freshwater fissure with 60–63 meters of visibility

Float and dive freely in crystal-clear waters with wetsuit or drysuit options

Visit Leiðarendi Cave, a 900-meter-long lava tube with unique rock formations

REDUCED–Summer Madness
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$ 303.52

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July 2026

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Explore Iceland Above and Below on a Snorkeling and Lava Cave Adventure


Experience two of Iceland’s most extraordinary natural wonders in a single day with an unforgettable combination of snorkeling and lava caving. This adventure takes you from the crystal-clear waters of Þingvellir National Park to the fascinating underground world of Leiðarendi Cave, offering an exciting journey through Iceland’s unique geological landscapes. Perfect for adventure seekers and nature lovers, the tour showcases the country's remarkable beauty both above and below the surface.


The experience begins at the UNESCO World Heritage-listed Þingvellir National Park, where you'll snorkel in the world-famous Silfra fissure. Renowned for its exceptionally pure glacial water and incredible underwater visibility, Silfra offers the sensation of floating through a breathtaking underwater canyon between the North American and Eurasian tectonic plates. With all snorkeling equipment provided and the option of a wetsuit or drysuit, even beginners can enjoy this once-in-a-lifetime experience with confidence.


The adventure continues underground at Leiðarendi Cave, a spectacular 900-meter-long lava tube located in the Blue Mountain region. Guided through ancient volcanic passages, you'll discover striking rock formations, lava shelves, stalactites, and other fascinating geological features created by volcanic eruptions thousands of years ago. The accessible route, with occasional light crawling, provides an exciting opportunity to experience Iceland’s volcanic landscape from an entirely different perspective.


Combining the serenity of Silfra’s crystal-clear waters with the rugged beauty of a volcanic lava cave, this unique excursion offers an unforgettable exploration of Iceland’s diverse natural environments. Whether you're fascinated by geology, eager for outdoor adventure, or simply looking for an experience unlike any other, this tour delivers an exceptional journey through two of Iceland’s most iconic landscapes.

What's Included
  • National park entrance fee
  • Bus fare
  • Pick up and drop-off in Reykjavík
  • English speaking guide
  • All necessary equipment for snorkeling 
  • All necessary equipment for caving
  • Free underwater Silfra photos
  • Hot chocolate for snorkeling
What's Not Included
  • Gratuity
  • Food & drinks
  • Warm clothes and socks
  • Swimwear and towel for wetsuit
  • Baselayer or thermals for drysuit

Warm clothes

Swimwear and towel

Thermals

Warm socks

Camera

  • Pregnant travelers
  • Non-swimmers
  • Travelers with Limited mobility impairments
  • Travelers with aquaphobia
  • Families with children
  • Nature enthusiasts
  • Couples
  • Groups of friends
  • Physically fit travelers
  • Photography lovers
  • Adventure seekers
  • Solo travelers

Public transportation nearby

Minimum age of participants is 12

Participants must be comfortable in water and able to swim

Confirmation will be received at time of booking

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Activity Provider: Adventure Vikings

Customer Reviews

Explore More Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos
Explore More Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos
Explore More Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos
Explore More Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos
+1
Day In a City

Explore More Silfra Snorkeling & Leidarendi Lava Tunnel - with underwater photos

Discover the wonders of Hafnarfjordhur, Iceland with this unforgettable experience. Combine two perfect adventure activities; snorkeling and caving. You will explore the hidden world of the lava fields in Iceland. You will see magnificent lava formations such as stalactites and drip stalagmitCombining snorkeling and caving offers the ultimate Icelandic nature experience, giving you a chance to explore both underwater and underground landscapes. Highlights of your tour include: Explore Þingvellir National Park, a UNESCO World Heritage SiteSnorkel in Silfra, a pristine freshwater fissure with 60–63 meters of visibilityFloat and dive freely in crystal-clear waters with wetsuit or drysuit optionsVisit Leiðarendi Cave, a 900-meter-long lava tube with unique rock formations. Combining snorkeling and caving offers the ultimate Icelandic nature experience, giving you a chance to explore both underwater and underground landscapes. Your adventure begins at Þingvellir National Park, a UNESCO World Heritage Site, where you will snorkel in the pristine waters of Silfra, one of. This tour includes: National park entrance feeBus farePick up and drop-off in ReykjavíkEnglish speaking guideAll necessary equipment for snorkeling All necessary equipment for cavingFree underwater Silfra photosHot choco. Combining snorkeling and caving offers the ultimate Icelandic nature experience, giving you a chance to explore both underwater and underground landscapes. Your adventure begins at Þingvellir National Park, a UNESCO World Heritage Site, where you will snorkel in the pristine waters of Silfra, one of the world’s top dive sites. This freshwater fissure, reaching ...