Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
After the cave tour, continue to Thingvellir National Park, a UNESCO World Heritage Site. Here, you’ll snorkel in the famous Silfra fissure, where the North American and Eurasian tectonic plates meet.
Wearing a dry suit to stay warm, float through crystal-clear glacial water with visibility up to 150 meters (490 ft). Drift between continents, explore deep blue channels, and experience one of the most unique snorkeling sites in the world.
With expert guides, small groups, and free underwater photos included, this tour offers an unforgettable way to experience Iceland’s geology from two perspectives.
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
After the cave tour, continue to Thingvellir National Park, a UNESCO World Heritage Site. Here, you’ll snorkel in the famous Silfra fissure, where the North American and Eurasian tectonic plates meet.
Wearing a dry suit to stay warm, float through crystal-clear glacial water with visibility up to 150 meters (490 ft). Drift between continents, explore deep blue channels, and experience one of the most unique snorkeling sites in the world.
With expert guides, small groups, and free underwater photos included, this tour offers an unforgettable way to experience Iceland’s geology from two perspectives.
Version 23 – March 23, 2026 19:20
Field
Current Version
Previous Version
Short Description
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
After the cave tour, continue to Thingvellir National Park, a UNESCO World Heritage Site. Here, you’ll snorkel in the famous Silfra fissure, where the North American and Eurasian tectonic plates meet.
Wearing a dry suit to stay warm, float through crystal-clear glacial water with visibility up to 150 meters (490 ft). Drift between continents, explore deep blue channels, and experience one of the most unique snorkeling sites in the world.
With expert guides, small groups, and free underwater photos included, this tour offers an unforgettable way to experience Iceland’s geology from two perspectives.
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
After the cave tour, continue to Thingvellir National Park, a UNESCO World Heritage Site. Here, you’ll snorkel in the famous Silfra fissure, where the North American and Eurasian tectonic plates meet.
Wearing a dry suit to stay warm, float through crystal-clear glacial water with visibility up to 150 meters (490 ft). Drift between continents, explore deep blue channels, and experience one of the most unique snorkeling sites in the world.
With expert guides, small groups, and free underwater photos included, this tour offers an unforgettable way to experience Iceland’s geology from two perspectives.
Version 21 – March 23, 2026 19:20
Field
Current Version
Previous Version
Summary
_
Experience Iceland's geological wonders with a combined lava tunnel exploration and snorkeling adventure in the Silfra Fissure, offering unparalleled underwater clarity and unique rock formations.
Version 20 – March 23, 2026 19:20
Field
Current Version
Previous Version
Short Description
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
After the cave tour, continue to Thingvellir National Park, a UNESCO World Heritage Site. Here, you’ll snorkel in the famous Silfra fissure, where the North American and Eurasian tectonic plates meet.
Wearing a dry suit to stay warm, float through crystal-clear glacial water with visibility up to 150 meters (490 ft). Drift between continents, explore deep blue channels, and experience one of the most unique snorkeling sites in the world.
With expert guides, small groups, and free underwater photos included, this tour offers an unforgettable way to experience Iceland’s geology from two perspectives.
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
Version 19 – March 23, 2026 19:19
Field
Current Version
Previous Version
Short Description
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
Version 16 – March 23, 2026 19:18
Field
Current Version
Previous Version
Name
Lava Tunnel and Silfra Snorkeling - Meet on Location
Lava Tunnel and Silfra Snorkeling - From Reykjavik
Version 14 – March 23, 2026 19:17
Field
Current Version
Previous Version
Name
Lava Tunnel and Silfra Snorkeling - From Reykjavik
Black & Blue Lava Tunnel and Silfra Snorkeling Adventure
Short Description
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
Discover Iceland above and below ground on this unique combo adventure. Meet your guides on location and begin with a lava caving experience at Raufarhólshellir, one of Iceland’s longest lava tunnels. Walk through vast underground chambers shaped by volcanic eruptions and admire colorful rock formations and lava textures.
Dive into Iceland's geological marvels with the Black & Blue Lava Tunnel and Silfra Snorkeling Adventure. Begin by exploring the Raufarhólshellir Lava Tunnel, one of Iceland's longest lava tubes, where you'll be awestruck by vibrant stalagmites and stalactites formed over 5,000 years. Afterward, journey to Þingvellir National Park to snorkel in the Silfra Fissure, a crystal-clear glacial waterway nestled between the Eurasian and North American tectonic plates. This unique experience offers unparalleled underwater visibility, allowing you to float effortlessly through the fissure's serene waters. Throughout the tour, expert guides ensure your safety and provide insights into Iceland's volcanic history and geology. To warm up after snorkeling, enjoy complimentary hot chocolate and cookies. Please note, lunch and refreshments are not included, so it's advisable to bring your own.
Highlights
Crystal-clear water with exceptional visibility
Enjoy free underwater photos
Experience Iceland above and below ground in one day
Dive into Iceland's geological marvels with the Black & Blue Lava Tunnel and Silfra Snorkeling Adventure. Begin by exploring the Raufarhólshellir Lava Tunnel, one of Iceland's longest lava tubes, where you'll be awestruck by vibrant stalagmites and stalactites formed over 5,000 years. Afterward, journey to Þingvellir National Park to snorkel in the Silfra Fissure, a crystal-clear glacial waterway nestled between the Eurasian and North American tectonic plates. This unique experience offers unparalleled underwater visibility, allowing you to float effortlessly through the fissure's serene waters. Throughout the tour, expert guides ensure your safety and provide insights into Iceland's volcanic history and geology. To warm up after snorkeling, enjoy complimentary hot chocolate and cookies. Please note, lunch and refreshments are not included, so it's advisable to bring your own.
Dive into Iceland's geological marvels with the Black & Blue Lava Tunnel and Silfra Snorkeling Adventure. Begin by exploring the Raufarhólshellir Lava Tunnel, one of Iceland's longest lava tubes, where you'll be awestruck by vibrant stalagmites and stalactites formed over 5,000 years. Afterward, journey to Þingvellir National Park to snorkel in the Silfra Fissure, a crystal-clear glacial waterway nestled between the Eurasian and North American tectonic plates. This unique experience offers unparalleled underwater visibility, allowing you to float effortlessly through the fissure's serene waters. Throughout the tour, expert guides ensure your safety and provide insights into Iceland's volcanic history and geology. To warm up after snorkeling, enjoy complimentary hot chocolate and cookies. Please note, lunch and refreshments are not included, so it's advisable to bring your own. This adventure is ideal for those seeking a blend of geological exploration and aquatic excitement in one unforgettable day.
Version 2 – March 23, 2026 16:58
Field
Current Version
Previous Version
Internal ID
AA-BAB
_
Short Description
Dive into Iceland's geological marvels with the Black & Blue Lava Tunnel and Silfra Snorkeling Adventure. Begin by exploring the Raufarhólshellir Lava Tunnel, one of Iceland's longest lava tubes, where you'll be awestruck by vibrant stalagmites and stalactites formed over 5,000 years. Afterward, journey to Þingvellir National Park to snorkel in the Silfra Fissure, a crystal-clear glacial waterway nestled between the Eurasian and North American tectonic plates. This unique experience offers unparalleled underwater visibility, allowing you to float effortlessly through the fissure's serene waters. Throughout the tour, expert guides ensure your safety and provide insights into Iceland's volcanic history and geology. To warm up after snorkeling, enjoy complimentary hot chocolate and cookies. Please note, lunch and refreshments are not included, so it's advisable to bring your own. This adventure is ideal for those seeking a blend of geological exploration and aquatic excitement in one unforgettable day.
Dive into Iceland's geological marvels with the Black & Blue Lava Tunnel and Silfra Snorkeling Adventure. Begin by exploring the Raufarhólshellir Lava Tunnel, one of Iceland's longest lava tubes, where you'll be awestruck by vibrant stalagmites and stalactites formed over 5,000 years. Afterward, journey to Þingvellir National Park to snorkel in the Silfra Fissure, a crystal-clear glacial waterway nestled between the Eurasian and North American tectonic plates. This unique experience offers unparalleled underwater visibility, allowing you to float effortlessly through the fissure's serene waters. Throughout the tour, expert guides ensure your safety and provide insights into Iceland's volcanic history and geology. To warm up after snorkeling, enjoy complimentary hot chocolate and cookies. Please note, lunch and refreshments are not included, so it's advisable to bring your own. This adventure is ideal for those seeking a blend of geological exploration and aquatic excitement in one unforgettable day.
Rails Timezone
_
Iceland
Summary
Experience Iceland's geological wonders with a combined lava tunnel exploration and snorkeling adventure in the Silfra Fissure, offering unparalleled underwater clarity and unique rock formations.
Experience Iceland's geological wonders with a combined lava tunnel exploration and snorkeling adventure in the Silfra Fissure, offering unparalleled underwater clarity and unique rock formations.
Cancellation notes
Up to 24 hours before the beginning of the activity: full refund
Less than 24 hours before the beginning of the activity or no-show: no refund
Up to 24 hours before the beginning of the activity: full refund
Less than 24 hours before the beginning of the activity or no-show: no refund
Emergency Phone Prefix
+1
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Tier labels
---
adult: ''
child: ''
---
adult: ''
child: ''
youth: ''
infant: ''
senior: ''
student: ''
Tier ages
---
adult:
from: '18'
to: '64'
child:
from: '5'
to: '11'
---
infant:
from: '0'
to: '4'
child:
from: '5'
to: '11'
youth:
from: '12'
to: '17'
adult:
from: '18'
to: '64'
senior:
from: '65'
to: '120'
Booking Cutoff Unit
minutes
_
Multiday
false
_
Valid Unit
minutes
_
Has Height Restrictions
true
_
Confirmation Necessary
false
_
Version 1 – March 23, 2026 16:52
Field
Current Version
Previous Version
Name
Black & Blue Lava Tunnel and Silfra Snorkeling Adventure
Product from https://adventures.is/iceland/day-tours/snorkeling-and-diving/black-and-blue/
Short Description
Dive into Iceland's geological marvels with the Black & Blue Lava Tunnel and Silfra Snorkeling Adventure. Begin by exploring the Raufarhólshellir Lava Tunnel, one of Iceland's longest lava tubes, where you'll be awestruck by vibrant stalagmites and stalactites formed over 5,000 years. Afterward, journey to Þingvellir National Park to snorkel in the Silfra Fissure, a crystal-clear glacial waterway nestled between the Eurasian and North American tectonic plates. This unique experience offers unparalleled underwater visibility, allowing you to float effortlessly through the fissure's serene waters. Throughout the tour, expert guides ensure your safety and provide insights into Iceland's volcanic history and geology. To warm up after snorkeling, enjoy complimentary hot chocolate and cookies. Please note, lunch and refreshments are not included, so it's advisable to bring your own. This adventure is ideal for those seeking a blend of geological exploration and aquatic excitement in one unforgettable day.
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Highlights
Enjoy free underwater photos
Experience crystal-clear glacial waters
Explore Raufarhólshellir Lava Tunnel
Snorkel between tectonic plates in Silfra
Witness stunning lava formations
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Included
All necessary snorkeling and caving gear
Certified PADI dive guide
Expert caving guide
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Excluded
Lunch and refreshments
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Valid_for
0
_
Category
Day Trips & Excursions
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Currency
ISK
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Rails Timezone
Iceland
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Duration from
5.0
_
Duration to
5.0
_
Summary
Experience Iceland's geological wonders with a combined lava tunnel exploration and snorkeling adventure in the Silfra Fissure, offering unparalleled underwater clarity and unique rock formations.
_
Duration unit
hours
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Know Before You Go
Bring a fleece or wool sweater and pants for layering.
Ensure you have a change of clothing for after the tour.
Wear warm, waterproof outdoor clothing and gloves.
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Know Before You Book
Minimum age is 12 years; weight limit is 45-120 kg; height limit is 150-200 cm.
Participants must be comfortable swimming and able to float in water.
Transportation to and from the meeting points is not included; plan accordingly.