Explore The Lava Tunnel — a cathedral of basalt
Just outside Reykjavík, Raufarhólshellir opens into a world shaped by volcanic force.
Guided tours lead you safely past illuminated rock textures, collapsed skylights, and winter ice pillars.
It’s an easy, unforgettable way to meet Iceland’s geology up close..
Raufarhólshellir — The Lava Tunnel Visiting timetable
Open year‑round with regular daily departures; winter schedules may be reduced. Check‑in typically 15 minutes before your booked slot.
Raufarhólshellir — The Lava Tunnel Closing Days
Tours may pause on select holidays or during severe weather. Always confirm operational status before driving.
Where is Located
Raufarhólshellir, Route 39 (Þrengslin), South Iceland
How to get to The Lava Tunnel
Raufarhólshellir sits 30–40 minutes from Reykjavík by car. Most visitors drive or book a guided tour with optional Reykjavík pick‑up.
By Train
Iceland has no rail service; reach the tunnel by car or guided transfer from Reykjavík.
By Car
From Reykjavík, take Route 1 southeast, then Route 39 (Þrengslin). The parking area is signposted; allow extra time in winter conditions.
By Bus
Public buses do not directly serve the cave. Join a guided tour with pick‑up, or use a taxi/transfer from Reykjavík.
On Foot
The site is in rural terrain — walking from Reykjavík isn’t feasible. Please arrive by car or tour transfer.
Why visit The Lava Tunnel
A vast lava tube with skylight collapses, rich mineral colors, and seasonal ice — guided storytelling brings the eruption to life.
Raufarhólshellir — The Lava Tunnel
Skylight Collapses and Mineral Colors
Where the roof fell in, daylight paints the tunnel walls. Iron, sulfur, and other minerals tint the basalt with reds, yellows, and purple‑brown hues — a natural gallery of color.
Winter Ice Formations
In colder months, ice pillars rise and frost patterns lace the rock. Guides illuminate these ephemeral sculptures — a dreamy blend of fire‑made rock and winter’s artistry.
Textured Lava Walls and Flow Ridges
Look closely and you’ll see how molten rock once moved like a river: ropes, ridges, and smooth drapes of basalt now frozen in time.
The Lava Tunnel at a glance
Quick answers to plan a comfortable underground visit.
Book your Lava Tunnel visit
Timed, guided tours with safety gear provided — easy and immersive.
Choose standard or extended walks to see more of the tube and skylights.