Step into Vatnshellir and walk a 45‑minute guided route through an 8,000‑year‑old lava tube on Snæfellsnes. Learn the geology behind lava stalactites and explore the subterranean side of Icelandic volcanism.
More ways to explore the area's outdoor wonders
A low, cool breath of earth meets you at the cave entrance—salted wind from the coast, then the enclosed hush of basalt. On the slopes of Snæfellsjökull a dark mouth opens into Vatnshellir, a lava tube formed during an eruption roughly 8,000 years ago. In the glow of a guide’s lamp the tunnel narrows and then unfurls: ropey pahoehoe folds, blistered pockets, lava stalactites and peculiar bulbous formations that look fossilized from fire.
Difficulty
moderate
Duration
45 minutes
Fitness Level
Suitable for most people who can climb and descend stairs and walk on uneven ground; some mobility limitations may make the visit challenging.
Wildlife
History
Vatnshellir formed when an 8,000‑year‑old volcanic eruption created lava tubes on the slopes of Snæfellsjökull; the mountain became famous through Jules Verne’s novel and local lore.
Conservation
The tube’s formations are fragile—visitors must stay with the guide and avoid touching surfaces; follow leave-no-trace practices on the surrounding lava fields.
Reserve your spot on the Vatnshellir Cave Tour today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Wear grippy footwear
Stairs and uneven basalt demand sturdy, closed-toe shoes with good traction.
Helmet and light provided
Tours include a helmet and flashlight, but bring a small personal headlamp if you prefer hands-free light.
Watch the stairs
Two spiral staircases connect the surface and tube—take your time on descents and ascents.
Protect the formations
Do not touch lava stalactites or walls; oils from skin can damage fragile surfaces.
Sturdy hiking shoes
Necessary for traction on basalt steps and uneven cave flooring.
Insulating midlayer
Keeps you warm in the constant cool cave temperatures.
fall
Waterproof shell
Protects against wind and coastal spray while approaching the cave.
winter
Small headlamp or spare light
Useful as a backup to the provided flashlight for hands-free viewing.