Ice Cave Lofthellir exploration – A permafrost Cave inside a magma tunnel.

The cave gets serious fast. Lofthellir combines a rugged ride through the volcanic outback near Mývatn with a rare walk into a permafrost cave formed inside an ancient lava tunnel. I like the strong geology focus and the small group size, which makes it easier to get help in the tighter sections. The main drawback is clear: you need moderate fitness, a good head for confined spaces, and comfort with sliding on ice.

I also like that the roughly four-and-a-half-hour outing includes the ride, guide, and cave admission rather than leaving you to sort out the difficult parts yourself. Guide Thristy received especially warm praise for local information, while another guide, Anton F, responded kindly to practical concerns. Bring waterproof gloves, a shell jacket, and wool socks, and pack light.

Key points to know before booking

• Lofthellir is a permafrost cave inside a lava tunnel, so you see both volcanic rock and year-round ice in one visit.
• The cave section lasts about two hours, with crawling, climbing, scooting, and short tight passages.
• A rugged off-road drive crosses Lúdentarborgir, the volcanic area connected with the creation of Mývatn.
• The group is limited to 10 people, giving the guide room to assist with ropes, ice, and awkward movements.
• The price is $410.48 per person, a serious cost that makes most sense if geology and active outdoor experiences are high on your list.
• You return to the Mývatn meeting point, with free cancellation available up to 24 hours before departure.

Why Lofthellir feels different from a normal cave tour

Many cave visits are mainly about looking. Lofthellir asks you to move through the cave.

You may crawl through narrow sections, slide down icy chutes, climb, and scoot along the floor. At several points, you can find yourself on your back. That physical element is not a side note. It is the reason this feels more like an expedition than a standard sightseeing stop.

The cave is also unusual from a geology standpoint. It formed as a lava tunnel, but parts remain frozen as permafrost. You get the dark, rough volcanic rock of Iceland’s past alongside ice formations shaped by cold and time. The result is a place that feels raw rather than polished for easy tourism.

I like that the experience explains the setting instead of treating the cave as a simple photo stop. Your guide can connect the underground tunnel with the volcanic activity around Mývatn and the Lúdentarborgir area above it. That context helps you understand why the cave exists and why the ice remains.

The ride through Lúdentarborgir

The outing begins at Berjaya Iceland Hotels Reykjahlíð in Mývatn. From there, the route heads into the volcanic outback of Lúdentarborgir on a rugged off-road drive toward Lofthellir.

This transfer is part of the experience, not just a way to get from point A to point B. You leave the settled area around Mývatn and cross ground shaped by the volcanoes that created the region. The drive gives your guide a natural chance to explain local geology and the forces behind the cave.

You should expect the road section to feel rougher than an ordinary sightseeing transfer. That is useful to know if you prefer smooth transport or have motion concerns. For active visitors, the rough approach adds to the sense that Lofthellir is not an easy roadside attraction.

The full activity takes about four hours and 30 minutes. Around two hours are devoted to the cave itself, leaving the rest for transport, preparation, and guidance. Allow the full block of time rather than treating this as a quick stop between other Mývatn sights.

Inside the frozen lava tunnel

The first impression is likely to be the change in light. You move from Iceland’s open volcanic country into a world of darkness, rock, and ice.

The cave section is long enough to feel substantial but not so long that the physical work becomes an all-day ordeal. Still, the difficulty comes from the way you move, not simply from the time underground. A short tight passage can demand more effort than a long walk on a level path.

You might need to squeeze through a couple of narrow points before the cave opens into roomier spaces. One useful detail from the experience is that the tighter sections are relatively brief. If you worry about claustrophobia, that distinction matters, but it does not make the cave suitable for everyone.

Ice can make the footing awkward. You may slide, sit, crawl, or use ropes while the guide helps you choose the safest way through. A large backpack becomes a nuisance quickly. The guide may need to assist with your movement, and a bulky bag can catch on rock or make a narrow passage harder.

A small camera setup is more practical than a full backpack and extensive gear. One person found that a large pack had to remain in the trailer, while carrying a camera through the cave required help from the guide. That is a useful warning for anyone who normally brings every lens and accessory on a day trip.

The physical challenge is part of the bargain

The operator describes the activity as requiring moderate physical fitness. In practice, you should be ready for more than walking.

The cave may require you to:

• Crawl through tight spaces
• Slide on ice
• Climb and scoot over uneven ground
• Use ropes with the guide’s assistance
• Spend time on your back
• Manage darkness and confined sections

This is not the right choice if you have significant mobility limitations or dislike confined spaces. It is also a poor fit if you expect to remain upright and dry throughout the visit.

That said, the challenge is not constant. The narrow sections are short, and the cave opens up after them. You do not need to be an athlete, but you do need enough mobility and confidence to get down low, get back up, and move carefully on slippery surfaces.

The guide makes a big difference here. A small group of no more than 10 allows for individual help, especially when someone needs instructions or a steady hand with the ropes. That personal attention is one of the strongest reasons to choose this tour instead of trying to arrange a cave visit without support.

What to wear and what to leave behind

The most useful clothing advice is simple: waterproof gloves, a waterproof shell, and wool socks.

Waterproof gloves matter because your hands may touch ice, rock, and possibly wet surfaces as you crawl or steady yourself. A shell jacket gives you protection without adding too much bulk in narrow areas. Wool socks help keep your feet warm during the cold cave section.

Avoid bringing a large backpack. The cave demands free movement, and the operator may need to store bigger bags in the trailer. A small camera or compact personal item is easier to manage than a heavy day pack.

You should also consider how much you value photography. Lofthellir offers unusual textures and conditions, but taking pictures may compete with the need to hold ropes, protect your equipment, and follow the guide through awkward spaces. Bring a camera only if you are willing to keep it compact and secure.

The guide and the value of a small group

The guide is more than a person who leads the way. You depend on that person for local context, route decisions, and practical help.

Thristy was singled out for strong local information and a calm approach. That matters in Lofthellir because the guide has to explain what you are seeing while also helping the group move safely through the cave. Another guide, Anton F, responded warmly to equipment advice, reinforcing the impression of a hands-on local operator.

The maximum group size is 10. The word private appears in the tour description, but you should read that as a small, personal experience rather than assuming you and your own party will always have the cave to yourselves. The limited size still helps. You are less likely to wait behind a large crowd, and the guide has more time to give individual assistance.

A 4.8 rating and 95 percent recommendation suggest that the unusual setting and active format work very well for the right audience. Those numbers should not replace reading the physical requirements, though. A high rating does not make tight passages comfortable for someone who is claustrophobic.

Is $410.48 a fair price?

At $410.48 per person, Lofthellir is an expensive half-day activity. I would not call it a casual add-on.

The value comes from the combination of several services: transport from Mývatn, the off-road approach, a guide, cave access, and a small group capped at 10. You are also paying for access to a difficult natural site that would be hard to visit independently.

The price makes the most sense if you have a strong interest in geology, caves, or active outdoor experiences. You are not merely paying to look at ice. You are paying for the route into the volcanic outback, the explanation of the area, the equipment guidance, and help through the cave’s awkward sections.

If your main goal is a relaxed view with little exertion, the price will feel high. The cave’s appeal depends on your willingness to crawl, slide, and get dirty. For the right person, the unusual setting can justify the cost. For someone who wants easy sightseeing, it probably will not.

Who should book Lofthellir?

I would recommend this experience to active visitors staying around Mývatn who want to understand Iceland’s volcanic character from the inside. It suits people who enjoy unusual geology, small groups, and a bit of controlled discomfort.

You are a good match if you can:

• Handle moderate physical activity
• Tolerate short confined spaces
• Move carefully on ice
• Travel with minimal baggage
• Follow close instructions from a guide
• Accept that part of the tour may happen on your knees or back

I would think twice if you have mobility limitations, strong claustrophobia, or an expectation of a dry, easy walk. The description and practical feedback make the physical demands too important to ignore.

The activity is offered in English, and confirmation arrives at booking. The meeting point is near public transportation at Berjaya Iceland Hotels Reykjahlíð, and the outing ends there. It is easy to fit into a Mývatn base, provided you reserve enough time around the four-and-a-half-hour schedule.

Free cancellation is available until 24 hours before the start time. If poor weather forces a cancellation, you can receive a different date or a full refund. Changes or cancellations inside that 24-hour window are not refunded, so keep the local cut-off time in mind.

My verdict on this Mývatn cave tour

I like Lofthellir because it gives you a direct encounter with two sides of Iceland: volcanic rock and stubborn, long-lasting ice. The off-road approach and hands-on route make the visit feel earned, while the small group and active guide support keep the challenge manageable for people who are properly prepared.

The best advice is to book it for the experience, not just the photographs. Wear waterproof gloves, a shell, and wool socks. Leave the big backpack behind. If you are ready to crawl through tight spaces and slide on ice, this can be one of the most memorable things you do around Mývatn.

If that sounds unpleasant rather than exciting, skip it. Lofthellir is not a gentle cave walk, and the price is too high for a tour that does not match your comfort level. For active geology fans, though, it is a strong choice and one of the more distinctive half-day outings in northern Iceland.

FAQ

Where does the Lofthellir tour start?

The tour starts at Mývatn, at Berjaya Iceland Hotels Reykjahlíð, 660 Mývatn, Iceland.

Where does the tour end?

The activity ends back at the meeting point in Mývatn.

How long does the experience last?

The complete activity lasts approximately four hours and 30 minutes. About two hours are spent at Lofthellir Cave.

How much does the tour cost?

The listed price is $410.48 per person.

Is cave admission included?

Yes. Entry fees to Lofthellir Cave are included.

How physically demanding is the tour?

You should have a moderate level of physical fitness. The cave involves tight spaces, crawling, climbing, sliding on ice, scooting, and spending time on your back.

What happens if bad weather cancels the tour?

If poor weather causes a cancellation, you will be offered a different date or a full refund. You can also cancel for a full refund if you cancel at least 24 hours before the experience starts.