Everything about our Monster Trucks

Engineering for Iceland’s Extreme Environments


Sleipnir Tours' Tatra truck stands as a monumental example of engineering and adaptation to Iceland's extreme environments. This vehicle, specifically tailored for glacier tours, combines robust design with advanced technology, making it an essential asset for navigating the challenging terrains of Langjökull glacier, the second-largest glacier in Europe.

Why Tatra?

Chosen for its exceptional engineering, the Tatra truck features independent suspension on each tyre, a smooth ride, and a durable chassis capable of carrying significant weight without additional modifications. The choice was further solidified by Tatra’s historical reliability and the integration of Euro 6 DAF technology, ensuring a blend of tradition and modern efficiency.


Book your trip on Langjökull Glacier onboard the biggest monster truck in the world

Design and Construction

The Tatra was custom-built with a specific chassis from Tatra, designed to accommodate large, 65-inch tires on 30.5-inch rims with a double beet lock system. This setup allows the truck to operate in rough terrain with air pressures as low as 4 psi. Sleipnir Tours constructed the passenger cabin in Hafnafjörður, Iceland, focusing on strength (using Steel 52) and excellent insulation, essential for the cold Icelandic climate.

Engine and Modifications

The truck is equipped with a powerful 530 HP DAF engine and an Allison 4700 automatic transmission, which includes a torque converter and retarder to enhance both power and control. Although the truck is modified, its 26-ton weight provides enough stability and traction that no additional steering or wheel adjustments are needed.

Eco-Friendly Innovations

The Tatra truck is equipped with a unique Pacto dry toilet system from Danfo, which uses a biodegradable flushing foil made of corn starch instead of plastic, reflecting Sleipnir Tours' commitment to sustainability. This system encapsulates waste without the need for water or electricity, making it ideal for the environmentally sensitive areas where the truck operates.

Technical Specifications

  • Length: 12 meters (39 ft)
  • Width: 3.3 meters (10.8 ft)
  • Height: 4 meters (13 ft)
  • Max Speed: 85 km/h
  • Fuel Consumption: 40-60 liters per hour, depending on offroad conditions
  • Capacity: 47 passengers seats,  plus a driver and guide
  • Special Features: WiFi, low-range transfer case, steering on the last axle, and an ecological toilet, Skyline windows.

Usage and Capabilities

The Tatra truck is primarily used for tours to Langjökull glacier starting from Gullfoss Cafe. Taking visitor's all year round to the glacier, with a summer and a winter program, see more about that here.

The large tires are specially designed to cross crevasses up to 2 meters wide! However, during our standard tours, we only visit areas of the glacier where there are no crevasses at all, making it a very safe experience.

The Sleipnir Legacy

Named after the mythical horse Sleipnir, Sleipnir 1 and Sleipnir 2 represent the company’s quest to build the ultimate glacier tour vehicles. Sleipnir 1, completed in 2017, marked the first major milestone with its massive 75-inch tires and a powerful 630-horsepower engine, specially designed for challenging glacier conditions.

Sleipnir 2, "our" Tatra, was completed in 2020. With its exceptional performance, it has exceeded the expectations of Sleipnir Tours and set a new standard for glacier exploration.



Read more about our Icelandic Folklore about Sleipnir

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July 15, 2025
There’s a quiet art to packing for a day in the Icelandic Highlands. Most locals don’t overthink it—we’ve just learned the hard way. We’ve been caught in sideways rain in July, sunburned in September, and snowed on in August. So if you’re planning to hop in a monster truck and head toward Langjökull or the wild interior, here’s a peek into what Icelanders actually bring along—and what tourists usually wish they had. Layers. Always layers. Forget about dressing for a season. In the Highlands, you dress for every season. Most of us throw on a decent base layer (no cotton), a fleece or wool mid-layer, and a waterproof shell. We’re not trying to look cute—we’re trying not to freeze while looking at a glacier and sweat while walking 100 meters uphill. Bonus points for having a puffy jacket in your bag. Windproof gear? Essential. Most tourists nail the outer layers… but forget the basics. Bring extra socks. You’ll thank us later. A hat, gloves, and a buff — even in summer There’s something about Highland wind that goes straight to your bones. Doesn’t matter if it’s 14°C in Reykjavík. Up here, the wind doesn’t care. A lightweight hat and gloves take up almost no space, and a buff or neck gaiter is great for blocking cold air—or covering your face during a wind gust that brings a mouthful of sand with it. And yeah, we wear them year-round. That’s just how it is. Read also: W hat to wear in Iceland? Food that doesn’t need cutlery This might be the most Icelandic advice of all: pack a sandwich, an energy bar, and some chocolate. Maybe a dried fish snack if you’re feeling bold. We’ve seen tourists bring pasta salad in Tupperware and try to eat it with a fork while standing in a snowdrift. Don’t be that person. You’ll want food that’s easy to eat, doesn’t freeze instantly, and ideally doesn’t require a table. Oh, and always bring more snacks than you think you’ll need. The Highlands have a way of extending your day without warning. A full water bottle (or thermos with coffee) You won’t find convenience stores or vending machines out there. Icelanders almost always bring a refillable water bottle or, better yet, a thermos full of coffee. A warm drink hits different when you’re halfway through a glacier tour and the wind’s picking up. Want to go full local? Add a bit of hot cocoa powder into your coffee. We call it kaffisúkkulaði and it tastes like heaven in a cup!
July 15, 2025
Off the Beaten Track: What Makes Iceland’s Highlands So Special? There’s a reason people call the Highlands the heart of Iceland. It’s not just because of the location, although it does sit squarely in the middle of the country. It’s because when you’re out there—no towns, no lights, no phone signal—you feel the pulse of something bigger. Most visitors stick to the ring road, and fair enough. It’s beautiful. But ask any Icelander where they go when they need to breathe, and it’s probably not the south coast waterfalls or the Blue Lagoon. It’s the Highlands. The silence It’s not quiet like a library or a park in winter. It’s a deeper kind of silence—one that fills your head. The kind where your boots crunching in the snow is the only sound for miles. The Highlands don’t ask for attention. They just exist. And if you slow down enough, you notice everything. The strange beauty This isn’t postcard-pretty. The landscape out here is raw. You’ll drive through black sand deserts, then suddenly find yourself beside a green moss-covered mountain. Then lava. Then snow. It doesn’t make sense, and that’s what makes it brilliant. Langjökull glacier rises like a frozen giant in the middle of it all. And even after years of driving on it, it still throws us surprises—fresh cracks, new shades of blue, a sunset that paints the ice orange for five minutes before disappearing again. 
June 27, 2025
Why a Sleipnir Glacier Tour Is a great choice for families travelling to Iceland! If you’re planning a family trip to Iceland and want to create a memory your kids will still be talking about years from now, a tour with Sleipnir on Langjökull Glacier should be high on your list. This isn’t your average sightseeing excursion. It’s an adventure that’s thrilling, family-friendly, and surprisingly easy to join — no climbing ropes or hiking boots required- even though we always reccommend good waterproof shoes. Just step aboard the world’s largest glacier truck and let Sleipnir take care of the rest! Here’s why families keep rating this experience as one of the highlights of their Icelandic journey. Big Trucks, Big Smiles For children (and let’s face it — most adults too), the excitement begins the moment they spot the Sleipnir glacier truck. These custom-built vehicles look like something out of a sci-fi movie — enormous, all-terrain monsters on giant wheels designed to handle the icy surface of Langjökull. Just climbing aboard is part of the adventure. Kids love the sheer scale of the vehicle, the view from the high seats, and the thrill of rolling over a glacier in something that feels like a moon rover. This ride alone is often the highlight for young travelers. It’s not every day you can say you crossed a glacier in a 15-ton beast with tires taller than your dad. Ages 4 years and up Welcome One of the best things about a Sleipnir tour is that it’s accessible to just about everyone. Whether you're traveling with a toddler, a teenager, or bringing along grandparents, there’s no strenuous hiking involved. The tour is designed so guests can step directly onto the glacier from the truck with minimal effort. It’s a rare way to explore Iceland’s highlands without needing special gear or training — just warm clothes and a sense of curiosity. Unfortunately, our trucks are not wheelchair accessible. Safety Without Sacrificing Adventure Glaciers can be intimidating. They’re massive, constantly shifting , and — without the right equipment or guides — potentially dangerous. That’s why Sleipnir puts safety at the center of every tour. The crew is trained in highland navigation and glacier safety, and the trucks are equipped with radios and GPS. Parents can feel confident knowing the tour is run by professionals who know the glacier inside and out. There are no narrow ridgelines or icy cliff walks. Just a smooth, well-managed route across the snow-covered landscape. Plenty to Keep Young Minds Engaged Once out on the ice, the guides don’t just drive around in silence. They’re experts at sharing stories, fun facts, and history about Langjökull and Iceland’s glaciers in a way that both kids and adults can enjoy. From Viking myths to the science of how glaciers form, the journey becomes a moving classroom with the most unforgettable views. Snowball fights? Totally allowed. Running around on the ice and marveling at how far you can see in every direction? Encouraged. It’s a safe space for kids to burn off some energy while adults enjoy the peace and scale of the glacier around them.
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