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Germany
Baden-Württemberg
Freiburg District
Hochschwarzwald
Breisgau-Hochschwarzwald
Oberried

Zastler Ice Holes

Highlight • Natural Monument

Zastler Ice Holes

Mountain biking

4.6

(146)

Cycling

4.7

(104)

Hiking

4.8

(62)

Road cycling

3.8

(13)

Gravel riding

5.0

(2)

Alpine skiing

5.0

(1)

The Zastler Ice Holes, known locally as Zastler Eislöcher, are a fascinating natural monument nestled in the picturesque Zastler Valley, at the foot of the majestic Feldberg massif in Germany's Black Forest region. Situated near Oberried-Zastler at an elevation of approximately 775 to 785 meters, this unique geological formation is renowned for its ability to retain ice and emit cold air even in the height of summer. The area is characterized by a jumble of large rock boulders, remnants of…

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Naturpark Südschwarzwald

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    Tips

    April 12, 2019

    Mountain biking

    Such so-called ice holes occur mainly in the Alps. Here in the Black Forest, this is rather rare. In fact, you can sometimes find ice rests in the gaps between the boulders even in midsummer. As cold winter air builds up on the bottom of the valley, thawing is sometimes slowed down to the point that these natural refrigerators stay in place until the summer.
    Translated by

    July 25, 2021

    Mountain biking

    No matter how hot it is outside, the ice holes are always very, very cold. The closer you get the colder it gets. Really very impressive.
    Translated by

    December 26, 2017

    Mountain biking

    Beautiful hiking trail in the Zastlertal.
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    Details

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    Elevation 830 m

    Weather

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    Thursday 9 April

    12°C

    5°C

    52 %

    Additional weather tips

    Max wind speed: 7.0 km/h

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    Location: Oberried, Breisgau-Hochschwarzwald, Hochschwarzwald, Freiburg District, Baden-Württemberg, Germany

    Frequently Asked Questions

    Where can I park when visiting the Zastler Ice Holes?

    Parking is available in the Zastler Valley, often near the trailhead leading to the Ice Holes. However, spaces can fill up quickly, especially on weekends and during peak season. Arriving early in the morning is highly recommended to secure a spot.

    Are the Zastler Ice Holes suitable for families with young children?

    Yes, the Zastler Ice Holes can be a wonderful destination for families. While the terrain around the ice holes themselves can be uneven with boulders, there are many family-friendly trails in the wider Zastler Valley. Look for routes with gentler inclines and shorter distances. The unique cold air phenomenon is often a highlight for children.

    What are the rules for bringing dogs to the Zastler Ice Holes?

    Dogs are generally welcome on the trails around the Zastler Ice Holes. However, as the area is part of a protected forest (Schonwald), dogs must be kept on a leash at all times. This helps protect the delicate ecosystem and wildlife. Please also remember to clean up after your pet.

    Can I find accommodation or places to eat near the Zastler Ice Holes?

    While the immediate vicinity of the Ice Holes is natural and undeveloped, you can find accommodation, cafes, and pubs in the nearby villages of Zastler and Oberried. The Herderhäusle pub is a well-known option in the Zastler Valley, offering refreshments and meals. It's advisable to check their opening hours in advance.

    What kind of unique plants or wildlife can I expect to see?

    The Zastler Ice Holes are home to a rare, subalpine plant community, typically found in glacial habitats, due to the unique microclimate. You might encounter mosses and other flora adapted to cold, damp conditions. As for wildlife, the surrounding Black Forest is home to various species, but direct sightings are not guaranteed. Always observe from a distance and do not disturb the natural habitat.

    What is the typical trail difficulty around the Zastler Ice Holes?

    The trails leading to and around the Zastler Ice Holes vary in difficulty. While some paths in the Zastler Valley are relatively easy, the immediate area of the Ice Holes involves uneven terrain with large boulders, making it an intermediate hike. Some longer routes that incorporate the Ice Holes and ascend towards Feldberg can be challenging. Sturdy footwear is always recommended.

    Is it possible to visit the Zastler Ice Holes in winter?

    Yes, visiting in winter offers a serene and unique experience, but conditions can be more challenging. Trails may be covered in snow or ice, requiring appropriate winter hiking gear such as sturdy, waterproof boots and possibly microspikes. The contrast of the cold air from the ice holes is less pronounced, but the natural beauty of the snow-covered landscape is impressive.

    How long does it take to hike to the Zastler Ice Holes?

    The duration of your hike depends on your starting point and the specific route you choose. From the main parking areas in the Zastler Valley, a direct walk to the Ice Holes and back can take anywhere from 1 to 2 hours. If you incorporate the Ice Holes into a longer circular route exploring the Zastlertal or ascending towards Feldberg, your hike could easily extend to 3-5 hours or more.

    What regulations should I be aware of when visiting the Schonwald Zastler Eislöcher?

    The Zastler Ice Holes are located within a protected forest (Schonwald). Visitors are required to stay on marked trails to protect the delicate ecosystem, especially the unique moss-spruce forest. Please do not disturb plants or wildlife, and take all trash with you. Open fires and camping are generally prohibited to preserve the natural environment.

    Are there any specific viewpoints or natural features to look out for besides the ice holes?

    Beyond the fascinating ice holes themselves, the Zastler Valley offers several picturesque spots. A notable feature is a two-tiered, approximately 4-meter-high waterfall of the Zastlerbach stream, which adds to the scenic beauty of the area. Various viewpoints along the hiking trails offer panoramic vistas of the valley and the surrounding Feldberg massif.

    What is the geological significance of the Zastler Ice Holes?

    The Zastler Ice Holes are a rare geological phenomenon in the Black Forest. They formed from large rock boulders deposited by glaciers during the last ice age and subsequent rockfalls. The unique arrangement of these boulders creates cavities where cold, dense air gets trapped, leading to a microclimate that retains ice and emits cold air even in summer. This makes them a significant site for studying glacial geology and microclimates.

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