Your guide to The Lava Tunnel (Raufarhólshellir), Iceland
If you're looking for a truly unique Icelandic adventure, The Lava Tunnel at Raufarhólshellir is an absolute must-see. Located just 30 minutes from Reykjavik, this spectacular underground wonder offers a fascinating glimpse into Iceland's volcanic past.
Raufarhólshellir is the fourth-longest lava tube in Iceland, stretching an impressive 1,360 meters through the earth. The tunnel was formed around 5,200 years ago during the Leitahraun eruption in the Bláfjöll mountains. As rivers of molten lava flowed from the eruption site, the outer layers cooled and hardened while the lava inside continued flowing, eventually draining away and leaving behind this magnificent hollow tube.
What makes this lava cave so special is its sheer scale and beauty. The tunnel reaches up to 10 meters high and 30 meters wide in places, creating cathedral-like spaces adorned with rainbow-colored rock formations and fascinating geological features. Every twist and turn reveals something new – from ancient lava flows frozen in time to naturally sculpted walls painted with vibrant mineral deposits.
During winter months, the tunnel transforms into an even more magical realm. Spectacular ice sculptures form at the entrance, with glistening icicles hanging from the ceiling like crystal chandeliers. Natural skylights puncture the roof where sections have collapsed over time, allowing sunlight and snow to filter into the cave and create stunning visual effects.
The tunnel is now equipped with footbridges and professional lighting that illuminate the most spectacular sections, making it accessible year-round. Guided tours lead you safely through this underground wonderland while expert guides explain how volcanic forces shaped the tunnel and point out fascinating details you might otherwise miss.
Tours typically last about an hour and are suitable for most visitors, though comfortable walking shoes and warm, waterproof clothing are recommended. The cave maintains a cool temperature year-round – think of it as walking inside a leaky refrigerator!
Why not also combine your visit with other nearby attractions? The famous Golden Circle is just a short drive away, and the Reykjanes UNESCO Global Geopark offers even more volcanic wonders to explore.
How to get to Raufarhólshellir Lava Tunnel
The Lava Tunnel is conveniently located just 30 km (19 miles) from Reykjavik – approximately a 30-minute drive along well-maintained roads, making it perfect for a half-day trip from the capital.
From Reykjavik, head east on Route 1 (the Ring Road) for about 18 km. Turn right onto Route 39 toward Þorlákshöfn and continue for another 12 km. The parking area will be on your left-hand side. Keep your eyes peeled for the Raufarhólshellir sign, as the turnoff can be easy to miss.
The tunnel is accessible by all vehicle types, and there's ample parking at the site. Tours depart regularly throughout the day during peak season, though booking in advance is recommended. If you prefer not to drive, guided tours with pickup from Reykjavik are also available.
