Búri Lava Tube — Iceland
Step inside a volcanic tunnel carved by ancient lava flows beneath Iceland's Southern Region — a raw, walk-through window into the island's geological underworld.
About this spectacle
Búri is a lava tube in Iceland's Southern Region, formed when the outer shell of a flowing lava stream solidified while molten rock drained away beneath, leaving a hollow tunnel of volcanic rock. Visitors walk through a passage shaped by raw geological forces, surrounded by rough basaltic walls, drip formations, and the cool, still air typical of Icelandic lava caves. The interior is dark beyond the entrance, requiring headlamps to reveal textures of frozen lava ripples and mineral coloring. The experience is quiet and immersive — a subterranean contrast to Iceland's dramatic surface landscapes. Because no Layer 2 evidence is available, specific dimensions and visitor infrastructure details are not confirmed.
When to go
Jan — Dec, peak May — Sep
Getting there
Nearest airport: KEF. Nearest city: Selfoss.
Booking options
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