Raufarhólshellir Lava Tunnel

Raufarhólshellir is a vast lava tunnel with colorful rock formations, offering an unforgettable walk through Iceland’s volcanic underground.

Raufarhólshellir is one of Iceland’s longest and most accessible lava tunnels, offering a rare chance to explore the underground world created by volcanic eruptions. Formed over 5,000 years ago, the tunnel reveals colorful mineral-stained walls, jagged lava formations, and dramatic rock textures shaped by flowing molten lava. Guided visits illuminate the cave’s geological features while sharing insights into Iceland’s volcanic history. Walking through the tunnel feels like stepping inside the heart of a volcano and experiencing the island’s raw natural power from below the surface.

Nearby Attractions

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Kerid Crater
A colorful volcanic crater lake with red rock slopes and blue-green water, offering scenic views along Iceland’s Golden Circle route.
Sky Lagoon
Sky Lagoon is a luxurious oceanfront geothermal spa with an infinity pool, Icelandic bathing rituals, and sweeping views of the Atlantic.
Krýsuvík
Krýsuvík is a vivid geothermal area with steaming vents, bubbling mud pools, and colorful minerals on Iceland’s Reykjanes Peninsula.
Hallgrimskirkja Church
Hallgrímskirkja is Reykjavík’s iconic church, inspired by basalt columns, with a soaring tower offering panoramic views of the city and beyond.
Old Reykjavik
Old Reykjavík features colorful houses, historic streets, and a cozy village feel near the harbor, blending the city’s early history with modern life.
Bessastadir
Bessastadir is the President of Iceland’s residence, set on a scenic peninsula near Reykjavík with deep historical and national importance.

Related Tours

Reykjanes Peninsula: Private Trip from Reykjavík with Blue Lagoon

For centuries, Iceland has been known as the Land of Fire and Ice, in no small part due to its abundance of active volcanoes. One of the best places to experience Iceland’s otherworldly volcanic landscapes is the Reykjanes Peninsula, a fascinating area within easy reach of Reykjavik, known for its lava fields, geothermal areas, and rugged coastline. Our private driving excursion showcases the best Reykjanes has to offer, taking you deep inside a lava tunnel, getting a closer look at other geothermal phenomena, and topping it all off with a relaxing dip in the mineral-rich waters of the famous Blue Lagoon.

On this full-day private tour, you will:

  • Spend a full day exploring the Reykjanes Peninsula, a hub of volcanic activity that straddles 2 tectonic plates;
  • Enjoy the undivided attention of your experienced driver guide, a passionate local well-acquainted with the geology, history and culture of Reykjanes;
  • Travel in style in a modern private vehicle with convenient pick up and drop off from your hotel in Reykjavik;
  • Visit Raufarhólshellir, a spectacular lava tunnel formed more than 5000 years ago;
  • Get a crash course on volcanology while you admire the colourful lava formations;
  • Explore the peculiar landscape of the Krýsuvík geothermal area;
  • Discover the fumaroles and folklore of Gunnuhver;
  • Immerse yourself in the relaxing waters of the Blue Lagoon, with Premium entry tickets included.

This full-day private driving excursion offers an in-depth exploration of the Reykjanes Peninsula, a region shaped by powerful volcanic forces and located where two tectonic plates meet. With the comfort of private transport and the insight of a knowledgeable local guide, the day reveals Iceland’s dramatic geology in all its glory before concluding with one of the world’s most celebrated geothermal spa experiences.

The journey begins with a convenient pickup from your Reykjavík hotel and a visit to Raufarhólshellir, one of Iceland’s most impressive lava tunnels. Formed more than 5,000 years ago, this vast underground passage offers a rare opportunity to walk through the heart of a volcanic eruption site. Inside, you’ll learn how molten lava once surged through the tunnel, leaving behind colourful rock formations, frozen lava flows, and striking textures that tell the story of Iceland’s ongoing volcanic activity, which has increased significantly in recent years, particularly around the Reykjanes area.

Back above ground, the tour continues across the raw landscapes of the Reykjanes Peninsula toward the Krýsuvík geothermal area. Here, the terrain appears almost extraterrestrial, with steaming vents, bubbling mud pots, and hillsides stained in vivid hues by mineral deposits. The scene is often likened to the surface of Mars, and your guide will provide insight into the geothermal processes that give rise to this ever-changing environment. A short drive away lies Gunnuhver, one of the most powerful geothermal areas in all of Iceland, where massive steam plumes rise from the earth, mud pools churn at boiling temperatures, and fumaroles release superheated steam with remarkable force. Alongside the geological explanations, you’ll also hear about the local legend associated with the site, giving you a sense of how the land has shaped Icelandic folklore. There will also be a pause for lunch (lunch not included) to allow for a taste of Iceland’s cuisine.

The experience culminates at the world-famous Blue Lagoon. With Premium entry tickets included, you can unwind in the milky, mineral-rich waters surrounded by lava fields, grab a refreshing drink from the swim-up bar, and apply a nourishing silica mud mask known for its skin-enhancing properties. After a day spent exploring Iceland’s volcanic heart, the lagoon provides a deeply soothing contrast where you can relax and enjoy incredible views of Reykjanes.

As you return to Reykjavík, you’ll carry with you a deeper appreciation for the forces that continue to shape Iceland, having combined striking landscapes, expert local insight, and a restorative geothermal bathing experience into one unforgettable day.

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