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Germany
North Rhine-Westphalia

Cologne District

Bergisches Land
Rheinisch-Bergischer Kreis
Overath

Lüderich mine sewage sludge dump silted up

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Lüderich mine sewage sludge dump silted up

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4.8

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Naturpark Bergisches Land

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  • Location: Overath, Rheinisch-Bergischer Kreis, Bergisches Land, Cologne District, North Rhine-Westphalia, Germany

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    July 7, 2025

    Hiking

    A true idyll! Yet, this area was a DUMP for toxic sewage sludge until 50 years ago. The 50 m high dam was built over the long-closed Grünewald mine. Behind it, huge amounts of sewage sludge from the LÜDERICH lead and zinc mine, which lay on the other side of the Sülz valley, were finally disposed of. The sludge was pumped into the basin via an 800 m long pipeline across the Sülz valley. The pumping station in the valley can still be seen today.
    de.wikipedia.org/wiki/Grube_Gr%C3%BCnewald
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    March 23, 2023

    Hiking

    The ponds are former clearing ponds of the Grünewald pit, a non-ferrous metal ore pit in the Bensberg ore district. In 1905 the operation of the pit was stopped and the ponds were left to nature.
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    4.6

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    #1.

    View from Tütberg – View of Bergisches Land loop from Grube Weiß

    7.97km

    02:11

    130m

    130m

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

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

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

    Moderate

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    Elevation 190 m

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    Monday 28 September

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    Location: Overath, Rheinisch-Bergischer Kreis, Bergisches Land, Cologne District, North Rhine-Westphalia, Germany

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