Iceland Ice Cave Tour from Gullfoss: The Winter Season Begins on November 1st

When does the Sleipnir Ice Cave Tour begin?

The winter Ice Cave and Glacier Tour begins on 1st of November.



Natural ice caves are seasonal attractions. During warmer months, meltwater flows through the glacier and creates tunnels, chambers and passages. As colder winter conditions return, suitable formations can be assessed and prepared for guided access.

The beginning of the season does not mean that every cave remains identical throughout winter. Langjökull is constantly moving, and the shape, colour and accessible parts of a natural ice cave can change.

Tours operate only when the weather, roads, glacier and cave are considered safe.

What is the Sleipnir Ice Cave and Glacier Tour?

The tour combines three parts of the Langjökull experience:

1. Transportation from Gullfoss into the Highlands
2. A journey across the glacier in a Sleipnir Monster Truck
3. A guided walk into the natural Neptune ice cave

The tour is designed for visitors who want to enter a real ice cave without completing a long or technical glacier expedition.

Guests travel with a local guide, receive traction equipment and are given safety instructions before approaching the cave. The experience is classified as moderate because it includes walking on snow and uneven terrain.

Is the Neptune ice cave natural?

Yes. Neptune is a naturally formed ice cave on Langjökull.

It is not the same as a permanent man-made ice tunnel. Its shape is created by meltwater, cold temperatures and movement within the glacier.

Natural ice caves change over time. The entrance may shift, passages may become wider or narrower and visible ice formations can look different throughout the season.

This means photographs should be treated as examples rather than a guarantee of exactly what every guest will see. Light, snow, weather and the condition of the cave all affect its appearance.

Why is the cave called Neptune?

The cave was named Neptune because of the blue colour visible in parts of its ice which resembles the Neptune gemstone.

Dense glacier ice absorbs longer wavelengths of visible light more easily while allowing blue wavelengths to travel further. This can make thick sections of ice appear blue or turquoise.

Guests may also see dark lines of volcanic ash within the cave walls. These layers were trapped in the glacier as snow accumulated and compressed into ice.

The combination of blue ice and black volcanic material creates patterns that reveal parts of the glacier’s natural history.

Where does the ice-cave tour depart from?

The shorter Ice Cave and Glacier Tour departs from the Gullfoss visitor area on the Golden Circle.

The exact meeting location and check-in instructions are included in the booking confirmation. Operational details may change according to snow, road and weather conditions, so guests should follow the information attached to their reservation.

Gullfoss is a practical meeting point for visitors travelling by rental car. It allows guests to visit Geysir and Gullfoss before continuing toward Langjökull.

Travellers without a rental car can choose a full-day tour from Reykjavík that combines the Golden Circle and the ice-cave experience.

Can you combine the Golden Circle and an ice cave in one day?

Yes. The Gullfoss location makes it possible to combine the Golden Circle with a Langjökull ice-cave tour.

Self-drive travellers can plan the day around:

• Þingvellir National Park
• The Geysir geothermal area
• Gullfoss waterfall
• The Sleipnir Ice Cave and Glacier Tour

Check the tour departure time before deciding how long to spend at each attraction. Winter driving takes longer than summer driving, and daylight is limited during November, December and January.

The full-day Reykjavík tour is a better option for visitors who prefer not to plan winter driving or coordinate the itinerary themselves.

What happens during the tour?

After meeting at Gullfoss, guests travel toward Langjökull and board one of Sleipnir’s specially designed glacier vehicles.

The journey continues across the winter landscape with views of the glacier and surrounding Highlands. The guide explains how Langjökull formed, how natural ice caves develop and how weather influences daily glacier operations.

Near the cave, guests receive crampons or suitable traction equipment and instructions about walking safely on snow and ice.

The group then walks to the entrance and explores the accessible part of the cave with the guide.

Depending on conditions, visitors may see:

• Naturally formed blue ice
• Curved ice walls
• Frozen chambers or passages
• Layers of volcanic ash
• Surfaces shaped by flowing meltwater
• Light passing through dense glacier ice

The route through the cave is determined by current conditions.

How difficult is the ice-cave tour?

The tour has a moderate difficulty level.

It does not require climbing experience, but guests should be able to:

• Walk through snow
• Move over uneven or slippery ground
• Use steps near or inside the cave
• Wear crampons or traction equipment
• Spend time outdoors in cold and windy conditions

The tour may not be suitable for every person with reduced mobility. Guests with health, mobility or accessibility concerns should contact Sleipnir Tours before booking.

The guide may adjust the route or time spent inside the cave according to conditions and the needs of the group.

Can children join the ice-cave tour?

Children aged four and older can join.

The glacier truck reduces the amount of strenuous hiking required, making the experience more accessible than many longer glacier expeditions.

However, parents should consider whether their child is comfortable with cold weather, walking over snow and entering a naturally formed cave.

Children must remain under adult supervision and follow the guide’s safety instructions throughout the experience.

Warm waterproof clothing and suitable winter footwear are essential for children as well as adults.

What should you wear on an Iceland ice-cave tour?

Wear warm layers, waterproof outer clothing and sturdy waterproof boots.

A suitable outfit includes:

• Thermal base layers
• A fleece or wool mid-layer
• An insulated layer when needed
• A waterproof and windproof jacket
• Warm or waterproof trousers
• Waterproof hiking boots
• Wool or synthetic socks
• A warm hat
• Insulated gloves
• A neck warmer

Avoid trainers, smooth-soled shoes and cotton clothing that becomes cold when wet.

Several adjustable layers work better than one very heavy garment because guests move between the heated vehicle and cold outdoor conditions.

Are crampons included?

Yes. Crampons or appropriate traction equipment are provided when required.

Guests must still bring suitable boots. Traction equipment cannot make lightweight trainers or smooth-soled footwear appropriate for glacier conditions.

The guide will explain how to put on and use the equipment before the group approaches the cave.

Are natural ice caves safe to visit?

Natural ice caves should only be entered as part of a professionally guided experience.

Glaciers move continuously. Temperature, water, snowfall and wind can affect the cave and surrounding route.

Guides assess conditions and can change the route, delay departure or cancel the tour if the area is unsafe. A cancellation or route change is a normal part of responsible glacier tourism rather than an indication that something has gone wrong.

Guests must follow the guide’s instructions and remain within the approved areas throughout the visit.

Is November a good time to visit an ice cave in Iceland?

November marks the beginning of the Sleipnir natural ice-cave season.

It is a useful month for travellers who want to combine early-winter landscapes with popular Golden Circle attractions. November can also be quieter than the Christmas and New Year period.

A November itinerary can include:

• The Langjökull ice-cave tour
• Gullfoss and Geysir
• Geothermal bathing
• Reykjavík
• A separate northern-lights excursion

Northern lights are not included in or guaranteed during the daytime ice-cave tour.

Visitors should prepare for short daylight hours, cold temperatures and potentially changing road conditions.

Frequently asked questions

How long is the Ice Cave and Glacier Tour from Gullfoss?

The experience normally takes approximately three to four hours, including transportation between Gullfoss and the glacier area.

Is the ice cave real?

Yes. Neptune is a naturally formed cave within Langjökull, not a permanent man-made tunnel.

Do I need previous glacier experience?

No. Technical glacier, climbing or ice-caving experience is not required.

Can I take the tour from Reykjavík?

Yes. Sleipnir offers a full-day option combining Reykjavík transportation, the Golden Circle and the ice-cave tour.

Is the cave guaranteed to look like the photographs?

No. Natural ice caves change with the glacier, weather, light and season. Photographs show the type of formations visitors may encounter. Ice caves change every year, so what you see is unique to each winter season!

Can the tour be cancelled?

Yes. The tour may be changed or cancelled if weather, roads, glacier conditions or the cave are considered unsafe.

Can I visit the natural ice cave during summer?

The dedicated Ice Cave and Glacier Tour begins on 1st of November and is scheduled until 15th April. Sleipnir operates a different Monster Truck glacier experience during the summer season.

Experience Langjökull from the inside

A natural ice cave is temporary by nature. It is shaped by water, preserved by winter temperatures and continually changed by the movement of the glacier.

From 1st of November to 15th of April, Sleipnir Tours gives visitors the opportunity to travel from Gullfoss onto Langjökull and enter the blue Neptune ice cave with an experienced guide.

Book the Gullfoss departure when travelling by rental car, or choose the Reykjavík option to combine the Golden Circle and natural ice cave in one organised winter day.