Lava caves in Iceland: which one to visit
Raufarhólshellir, Víðgelmir, Vatnshellir, Leiðarendi or Lofthellir. The easy one is near Reykjavík; the wild one is unlit and you crawl.
The short version
- Easiest from Reykjavík: Raufarhólshellir, 40 minutes away, walkways and lighting, from €65 on site.
- Biggest: Víðgelmir near Húsafell, about two hours from town, best done as part of a Silver Circle day.
- Cheapest and shortest: Vatnshellir on Snæfellsnes, 50 minutes, from €43, down a spiral staircase.
- Leiðarendi has no walkway or lights. Expect to crouch, scramble and get dusty.
- Every cave is cold (around 0–5°C) all year. Bring gloves and proper shoes.
For most people the answer is Raufarhólshellir, the Lava Tunnel. It is 40 minutes from Reykjavík, it has walkways and lighting, and you are in and out in an hour. Go further only if the cave is on your route anyway (Víðgelmir on a west Iceland day, Vatnshellir on Snæfellsnes) or if you actually want to get dirty, in which case it’s Leiðarendi.
Iceland has hundreds of lava tubes. Five are run as tours. They differ far more in effort than in what you see.
Raufarhólshellir — the easy one near Reykjavík
A lava tube about 1.4 km long in the Leitahraun lava field, formed around 5,200 years ago, on the road between Reykjavík and Hveragerði. The tour covers the first few hundred metres on built walkways, with lights on the colours in the walls, and ends where a collapsed roof lets daylight in. Difficulty is genuinely low. Children from about three are fine.
If you have a car, book The Lava Tunnel — Meet on Location from €65. It runs every half hour most of the day, so it slots in on your way to or from the Golden Circle or the south coast. Without a car, the version with Reykjavík pickup is from €117 and takes three hours, most of it in the minibus.
The downside: it is the most visited cave in the country, and it feels managed. That is the price of the walkway.
Víðgelmir — the big one in the west
Víðgelmir, in the Hallmundarhraun lava field near Húsafell, is the largest lava cave in Iceland by volume. Parts of it are tall enough to feel like a hall. There is a walkway here too, and ice forms near the entrance in the colder months.
It is about two hours from Reykjavík, so a cave-only trip makes little sense. Fold it into a west Iceland day. Silver Circle & Viðgelmir Lava Cave is from €190 for ten hours with pickup, with Deildartunguhver, Hraunfossar and Reykholt on the same day. If you want to go beyond the walkway, Cave Master is from €620 for four hours over boulder fields in the unlit back section, minimum age 12. It’s a lot of money; it’s also the most complete caving we sell.
Vatnshellir — short and cheap on Snæfellsnes
Vatnshellir sits inside Snæfellsjökull National Park, about 8,000 years old and only a couple of hundred metres long. You climb down a spiral staircase to two levels about 35 metres below the lava field, the guide turns off the torches for a minute, and you climb back up.
Vatnshellir Lava Cave Tour is from €43 and 50 minutes, with departures most of the day. It is not worth a trip from Reykjavík on its own. It is worth an hour of a Snæfellsnes day, especially in rain, because it’s the one stop the weather doesn’t touch.
Leiðarendi — the one you crawl through
Leiðarendi, off the Bláfjöll road about 25 minutes from Reykjavík, has no lights and no walkway. It loops for about 900 metres, with stalactites, lava drips and a few places where you bend double or go on hands and knees. It is the nearest thing to proper caving within easy reach of town.
The most accessible way in is Caving & ATVs, from €226 for seven hours, pairing an hour of quad biking with the cave. If you are claustrophobic or have bad knees, skip it. If you like scrambling, it’s more fun than any of the lit caves.
Lofthellir — ice inside a lava tube
Lofthellir, near Mývatn in the north, is a lava tube with permanent ice inside it: columns and frozen waterfalls, some of them centuries old. You reach it on a rough track and a 30-minute walk across lava, then crawl through a narrow entrance. Lofthellir Ice-Cave Exploration is from €364 for four and a half hours from the Mývatn area, minimum age eight. Check dates on the tour page before planning around it — access depends on the track.
Our honest take
If you want one cave and you’re staying in Reykjavík, do Raufarhólshellir and drive yourself: 32545, an hour, done. Don’t pay for the pickup version if you have a car.
If you’re doing Snæfellsnes, stop at Vatnshellir. If you’re doing Borgarfjörður and Húsafell, take the Víðgelmir day. Neither is worth the drive on its own.
If you want an actual caving experience rather than a walk in a dark tunnel, book Leiðarendi, and accept that you’ll come out dusty and a bit bruised. That’s the point of it.
None of these is warm. Around freezing inside, all year. Gloves, a hat and shoes with grip, whatever the weather outside.
