Katla or Vatnajökull: which ice cave?
Iceland has two well-known places to walk inside a glacier, and they suit different trips. Katla's cave is a short Super Jeep ride from Vík and is visited in every month. Near Jökulsárlón, the Vatnajökull caves are the clear blue ones on the posters, but they open only in the cold months and sit much farther from Reykjavík. Below, the two go side by side, with a plain answer on who should pick which.
Two glaciers on one coast road
Both caves lie off Route 1, the Ring Road along Iceland's south coast, but a long way apart. The Katla cave forms in Kötlujökull, an outlet glacier on the eastern side of Mýrdalsjökull, and its tours start in Vík, about 180 km (110 miles) from Reykjavík, or roughly 2.5 hours by car. The Vatnajökull caves form in the edges of Vatnajökull, Iceland's largest ice cap, near Jökulsárlón, the iceberg lagoon about 190 km (120 miles) east of Vík. That adds roughly 2.5 hours on the same road, and puts the lagoon about 5 hours from Reykjavík each way. Which cave you choose decides how much of your trip goes into driving.
The two caves side by side
| What changes | Katla (Kötlujökull) | Vatnajökull |
|---|---|---|
| Season | All year | Cold months only, roughly November to March |
| Road time from Reykjavík | About 2.5 hours to Vík | About 5 hours to Jökulsárlón |
| The ice | Blue ice cut by black bands of volcanic ash | The clear blue ice of the famous photos |
| Cave size | Usually small, and it changes week to week | Varies with the winter |
| Tour from the meeting point | 3 hours by Super Jeep from Vík | Read each listing |
| Price per adult | ~$177–223 | From about $157 on Viator (a tour from Höfn) |
The Katla range runs from Gravel Travel, the cheapest cave tour from Vík, up to Troll.is, our pick. The Vatnajökull figure comes from a single listing and is only a rough guide, since we have not compared those tours in the same detail.
Why Katla wins in summer
Katla's cave is the reason you can book an Icelandic ice cave tour in July at all. The Vík operators drive out in every month, and when a cave grows unsafe or melts back they find a replacement. Katlatrack reviewers say the company looks for a new cave almost every year. Summer has a cost, because meltwater can shrink what you see. One September group found the entrance dome had collapsed, while a July group on the same tour went into two tunnels. Our seasons guide goes through the months one by one.
Vatnajökull works the other way round. Its caves hold the glassy blue ice that fills most pictures of Icelandic ice caves, and they are visited only in the cold months, roughly November to March. If your trip falls between April and October, the choice has already been made for you.
What the Katla cave looks like
Expect something rougher than the posters. The ice in Kötlujökull is blue in places but striped with black and gray bands, layers of tephra from past eruptions of the volcano under Mýrdalsjökull. That striping is the Katla cave's own character, and some people prefer it to plain blue. The cave is usually smaller than the Vatnajökull ones too. Arctic Adventures reviewers found it smaller than they had pictured, and one Katlatrack reviewer thought the walk up the glacier was the bigger draw. Review summaries for Troll.is and Gravel Travel both mention guests who wanted clearer expectations about size. Our page on Katla volcano and the Mýrdalsjökull glacier explains where the ash comes from, and photographing the Katla ice cave covers how to make the most of dim light.
How long each one takes
Every main Katla tour lasts about 3 hours from the meeting point in Vík and back. Troll.is, from ~$223, drives about 30 minutes by Super Jeep and then walks about half an hour across the glacier. About an hour at the cave follows, safety briefing included, in a group of 13 at most. Katlatrack, from ~$220, spends about 40 minutes off-road each way over black sand and glacial rivers and runs several departures a day, though groups reach 24. Arctic Adventures, from ~$188, takes up to 14 people over Mýrdalssandur and onto an easy glacier walk the listing calls beginner-friendly. Any of them fits into half a day around a night in Vík.
A Vatnajökull cave asks for a bigger plan. With the lagoon about 5 hours from Reykjavík, it suits a trip with a night or two along the eastern half of the south coast. One ice cave tour from the town of Höfn, east of Jökulsárlón, appears on Viator from about $157. Read those listings closely for where they meet and how far you walk before you book.
Katla in a small group, any month
Troll.is takes 13 people at most from the Vík Inn hotel and walks you across the glacier to about an hour at the cave, from ~$223. Free cancellation runs until 24 hours before the start on both sites.
Who should pick which
- Summer visitors. Katla, since it is the cave that is open from roughly April to October;
- A South Coast day from Reykjavík. Katla. Vík lies within a day's reach and Jökulsárlón does not; our Reykjavík guide weighs the two ways of doing it;
- A winter Ring Road trip with a night near Jökulsárlón. Both. They sit on the same road, and striped ice and clear ice feel different enough to see each;
- Anyone set on glassy blue ice. Vatnajökull in winter, with the long drive accepted;
- Travelers with only a weekend. Katla, ideally after a night in Vík so the tour is not squeezed between two long drives.
Cheaper ways onto the ice
If the price matters more than the cave, two options sit at the low end. Gravel Travel's tour from Vík, from ~$177, is the cheapest Katla cave trip we compare, with about 30 minutes inside a cave the listing says is not shared with other operators. Its catch is group size, up to 19 on GetYourGuide or 16 on Viator, and one reviewer was driven out in an ordinary vehicle, not a Super Jeep.
For a glacier with no cave at all, Arctic Adventures' Sólheimajökull glacier hike, from ~$105, spends about 4 hours on Sólheimajökull, another tongue of Mýrdalsjökull about half an hour west of Vík. A certified guide hands out crampons, helmet, harness and an ice axe. The catch is plain in the name, because you walk on the ice and never go inside it, and nobody under 8 can join. Boots rent for 1,500 krónur, and the group meets by a yellow school bus in the Sólheimajökull car park.
Booking either one
The Katla tours on this site cancel free until 24 hours before the start and let you reserve now and pay later, which helps when a winter storm closes the road. Viator shows that people book Troll.is about 68 days ahead on average, so summer seats go early. What a Katla ice cave tour costs sets every price side by side. For the layers, see our clothing guide, and for fitness, how hard the walk is. The three main tours are compared on the home page under the comparison.