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Natural Monuments

Danube Sinkhole Immendingen

Natural Monuments

Danube Sinkhole Immendingen

Highlight • Natural Monument

Danube Sinkhole Immendingen

Recommended by 331 hikers out of 340

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Naturpark Obere Donau

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Location: Freiburg District, Baden-Württemberg, Germany

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Best Hikes to Danube Sinkhole Immendingen

4.2

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296

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1. Danube Sinkhole Immendingen – View of the Höwenegg Crater Lake loop from Immendingen

11.1km

03:04

180m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

4.4

(75)

310

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2. Höwenegg Crater Lake – Danube Sinkhole Immendingen loop from Mauenheim

10.8km

02:59

190m

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Moderate

4.4

(24)

102

hikers

3. Höwenegg Crater Lake – Danube Sinkhole Immendingen loop from Immendingen Mitte

22.0km

06:07

400m

Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.

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Hard

Tips

Günter L.S.

January 8, 2023

Now in winter you don't see seepage. But it was easy to observe how the Danube flows 'backwards' in some places.

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Rainer & Petra

June 23, 2021

The Danube disappears at Immendingen and leaves behind an empty stony river bed for around 155 days a year.
The water is sucked into the porous limestone layers through the "sinkholes" in the ground and flows through underground cavities into the Aach spring some 12 km away. There it reappears after 60 hours. The Danube water follows the natural gradient of 183 meters above sea level. Anyone walking on the parallel hiking trail above the river bed can easily see the swallowing points.
It is impressive to see how the water suddenly seeps into the ground at this point. The exit point of the water at the Aach source in Aach should also be visited.
Part of the water seeps away throughout the year. However, the Danube only disappears completely in the summer months. Depending on the weather, you can hike through the river bed from mid-May to mid-September with dry feet. You can then go looking for fossils in the dry river bed.
The fact that the Danube seeps away in Baden because it does not want to see the misery there shortly before the border to Württemberg is a legend that has always been cultivated by the people of Baden. Quite understandable, as the Danube Canal in Tuttlingen was for a long time more of a sewer for shoe and metal factories and tanneries. Today the Danube has 'good' water quality.

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Christian K. & Miriam

February 12, 2022

During our visit in February, all that could be seen of the seepage was small whirlpools, but funny slurping noises could be heard at the points where the water disappears. Many panels also refer to the natural spectacle.

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Elevation 670 m

Weather

Today

Wednesday 26 November

2°C

-3°C

100 %

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Max wind speed: 9.0 km/h

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Location: Freiburg District, Baden-Württemberg, Germany

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Danube Sinkhole Immendingen

1. Danube Sinkhole Immendingen – View of the Höwenegg Crater Lake loop from Immendingen

2. Höwenegg Crater Lake – Danube Sinkhole Immendingen loop from Mauenheim

3. Höwenegg Crater Lake – Danube Sinkhole Immendingen loop from Immendingen Mitte

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