Exploring Iceland’s Lava Tubes - Self-Drive Cave Adventures with Höldur Car Rental

Your Icelandic adventure starts here — and we’ll be right by your side.

Iceland is a land shaped by powerful volcanic forces, where molten lava once flowed across raw landscapes, leaving behind an underground world of breathtaking beauty. Beneath its moss-covered lava fields lie vast, cathedral-like tunnels known as lava tubes – natural caves formed when the surface of a lava flow cooled and hardened while molten rock continued to move beneath.

For travellers seeking a unique adventure, exploring these caves offers a chance to step inside the island’s geological history. And there’s no better way to reach them than with the freedom of a self-drive tour. With Höldur’s car hire in Reykjavik and Keflavik International Airport (KEF), you can explore Iceland’s lava caves at your own pace, combining iconic sites with off-the-beaten-path wonders.

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Why Self-Drive is the Best Way to See Iceland’s Lava Tubes

Driving yourself means flexibility. You can set off early to catch the morning light, linger at scenic stops, or take spontaneous detours to hidden waterfalls and fishing villages. Lava tubes are often scattered in remote areas, and public transport won’t take you there. With your own rental car, every day becomes an adventure shaped by your curiosity.

With Höldur, you’ll enjoy:

• Local knowledge with global service standards – Serving travellers since 1966, with Europcar quality assurance.

• Convenient pick-up points – Whether you land at KEF Airport or start in Reykjavik city.

• A fleet for all seasons – From compact cars for summer road trips to 4x4s for winter and rougher tracks.

• Eco-conscious options – Including low-emission and fuel-efficient vehicles to help protect Iceland’s delicate ecosystems.

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Top Lava Tubes to Visit on Your Self-Drive Adventure

1. Víðgelmir – The Giant of Icelandic Lava Caves

In the Hallmundarhraun lava field in West Iceland, Víðgelmir is not just Iceland’s largest lava tube but one of the most spacious in the world. Created around 900 AD during a massive eruption from the Langjökull glacier region, the cave stretches almost 1,600 metres long, with some chambers reaching 16 metres across. Archaeological finds, including animal bones and early human artefacts, suggest it was once a shelter during Iceland’s Viking Age.

Today, guided tours take visitors through illuminated sections of the cave, revealing mineral-rich walls in reds, golds, and purples, alongside spectacular winter ice formations.

Driving tip: Around two hours from Reykjavik to Húsafell. In winter, a 4x4 is recommended for safety.

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2. Raufarhólshellir – The Accessible Lava Tunnel Near Reykjavik

Formed about 5,200 years ago during the Leitahraun eruption, Raufarhólshellir is one of Iceland’s most accessible lava tunnels – just 30 minutes from Reykjavik. In the past, it was used as a shelter and even as a travel route between farms during harsh winters. Stretching 1,360 metres, the tunnel now features well-maintained walkways and subtle lighting that reveal its colourful rock layers.

In winter, dripping water forms delicate ice sculptures, creating a magical atmosphere. The ease of access and year-round tours make it a great choice for families and first-time cave explorers.

Driving tip: Ideal as a first stop after collecting your rental car in Reykjavik or KEF Airport.

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3. Surtshellir – The Cave of the Fire Giant Surtr

Surtshellir is steeped in Norse mythology, said to be the fiery domain of Surtr, the giant destined to bring about Ragnarök. Located in the Hallmundarhraun lava field, this nearly 2-kilometre cave is Iceland’s longest. Historical records reveal that during the Middle Ages, Surtshellir served as a hideout for outlaws who survived by raiding nearby farms.

Its dramatic lava formations, skylights, and echoing chambers make it both a natural wonder and a living piece of folklore. Surtshellir is a wilder, less developed cave, so visiting feels like stepping back into a raw and untamed past.

Driving tip: Rough roads require a high-clearance 4x4 like Dacia Duster or the Toyota Landcruiser, especially outside summer months.

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4. Vatnshellir – Journey to the Centre of the Earth

Set within Snæfellsjökull National Park, Vatnshellir is over 8,000 years old, created when lava flowed from a nearby eruption and drained away, leaving twisting tunnels. The cave descends about 35 metres underground via a spiral staircase, leading into chambers that feel frozen in time.

This location is also famous in literature – Jules Verne’s Journey to the Centre of the Earth begins at Snæfellsjökull, making Vatnshellir a must-visit for fans of classic adventure stories.

Driving tip: A 2.5-hour scenic coastal drive from Reykjavik, suitable for most vehicles year-round.

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5. Lofthellir – A Hidden Ice Palace

Remote and pristine, Lofthellir lies in the 3,500-year-old Laxardalshraun lava field near Lake Mývatn in North Iceland. Known for its extraordinary ice sculptures, the cave’s stable underground climate preserves these formations for much of the year. Scientists study Lofthellir for its unique subterranean ecosystem, while travellers are drawn to its frozen beauty and peaceful isolation.

Perfect for adventurous travelers, the visit includes a short 20-minute walk across a stunning lava field. The effort rewarded by the sight of crystalline ice shimmering in the cave’s darkness.

Driving Tip: The road is too rugged to drive yourself. Book a guided tour from the Mývatn area. You can leave your rental car there as Super Jeeps handle the rough terrain.

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Suggested Self-Drive Itineraries

3-Day West Iceland Lava Cave Adventure

• Day 1: Pick up your rental car at KEF → Visit Raufarhólshellir.

• Day 2: Drive to Víðgelmir & Surtshellir. Overnight in Húsafell.

• Day 3: Return to Reykjavik via scenic fjords.

7-Day Iceland Cave & Coast Explorer

• Days 1–2: KEF → Raufarhólshellir → Golden Circle.

• Days 3–4: Snæfellsnes Peninsula & Vatnshellir.

• Days 5–6: North Iceland & Lofthellir.

• Day 7: Return to KEF or Reykjavik for drop-off.

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Self-Drive Safety Tips for Lava Cave Exploration

• Book guided tours – It’s safer and ensures you learn about the cave’s history and geology.

• Choose the right vehicle – 4x4s are best for winter and remote sites.

• Check conditions daily – Use safetravel.is for weather and road updates.

• Dress for all weather – Layers, waterproofs, and sturdy shoes are essential.

• Respect nature – Stay on marked paths to protect fragile formations.

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FAQs – Self-Driving to Iceland’s Lava Tubes

Do I need a 4x4 to visit Iceland’s lava caves?

Not for all – Raufarhólshellir and Vatnshellir are accessible year-round with standard vehicles. Surtshellir requires 4x4 access. Lofthellir is not accessible by rental car—book a guided super jeep tour from lake Myvatn area.

Can I rent a car at KEF Airport and return it in another city?

Yes – Höldur offers one-way rentals between KEF, Reykjavik, and locations like Akureyri and Egilsstaðir

Is it safe to explore lava caves without a guide?

No – Guided tours are required for most caves for safety and conservation.

How far are the caves from Reykjavik?

Raufarhólshellir: 30 mins, Víðgelmir: 2 hrs, Vatnshellir: 2.5 hrs.

When is the best time to visit?

Year-round – winter for ice formations, summer for easier driving.

Are children allowed?

Yes, with varying age limits – check with operators.

What should I wear?

Warm layers, waterproofs, sturdy shoes, and gloves.

How do I get from KEF to the nearest cave?

Pick up your Höldur rental at KEF and drive 30 minutes to Raufarhólshellir.

Your Journey Begins with Höldur

From the legends of Surtshellir to the ice wonders of Lofthellir, Iceland’s lava tubes are gateways into the island’s volcanic soul. Driving yourself allows you to connect these wonders with Iceland’s stunning landscapes, on your own schedule.

With Höldur’s friendly service, dependable vehicles, and commitment to sustainability, your self-drive cave adventure from Reykjavik or Keflavik Airport will be smooth, safe, and unforgettable.

Ready to start? Book your Höldur car today and let Iceland’s underground wonders lead the way.

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