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Germany
Saxony-Anhalt
Harz Mountains
Osterode am Harz
Bad Grund

Ernst August Stollen

Highlight • Historical Site

Ernst August Stollen

Road cycling

4.7

(34)

Hiking

4.7

(18)

Cycling

5.0

(2)

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  • Location: Bad Grund, Osterode am Harz, Harz Mountains, Saxony-Anhalt, Germany

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  • Take Me There

    Tips

    March 24, 2025

    Hiking

    The Ernst-August Tunnel is a 26 km long, branched underground system, a truly extraordinary engineering feat.
    It is the deepest drainage tunnel ever built in the entire Upper Harz region.
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    August 15, 2021

    Road cycling

    Very interesting - you can occupy yourself with this tunnel after the tour and read it in peace. Its length and the so-called "mouth hole" are really noteworthy.
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    August 15, 2021

    Road cycling

    Drainage tunnel from the 18th century. from Clausthal Zellerfeld to Gittelde.
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    Nearby routes

    Best routes near Ernst August Stollen

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    1.0

    (1)

    6

    hikers

    #1.

    View of the Harz Foothills – Ernst August Stollen loop from Gittelde

    6.71km

    01:56

    170m

    170m

    Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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

    Moderate
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    Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

    Easy

    Details

    Informations

    Elevation 230 m

    Weather

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    Wednesday 21 October

    12°C

    6°C

    53 %

    Additional weather tips

    Max wind speed: 24.0 km/h

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    Location: Bad Grund, Osterode am Harz, Harz Mountains, Saxony-Anhalt, Germany

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