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This high mountain of waste is always impressive.

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Nice to cycle along here.

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That's what grandma always said: If the mountain is dark, it will rain, if it is light, the sun will shine 🌞

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From 1910 to 1997, potash and rock salt were mined in the Lower Saxony-Riedel mine. Most of the production residue from 87 years of mining could be returned to the underground cavities. The remaining material was dumped in Wathlingen. You can see the result from afar today. The dump consists of 94 percent rock salt. Now when it rains or snows, the precipitation dissolves salt from the heap. The salted rainwater is currently collected in the edge of the heap and used to flood the underground mine workings. However, this flooding cavity can only be used to a limited extent. That is the reason why K+S is covering and renaturating this waste dump - the new formation of saline water should be significantly reduced.

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The Riedel potash plant is a former potash mine near Hänigsen. It was the world's deepest mine for potash salt. The Riedel shaft was sunk between 1905 and 1908 (770 m). Funding began in 1909. In 1907/08 a mine siding railway was built from Burgdorf via Sorgensen and Weferlingsen to Hänigsen. In 1928 it was temporarily closed. In the years 1937 to 1945 the mine was part of the army ammunition production facility and underground dump, the Hänigsen Army Ammunition Facility. On June 18, 1946, the explosion accident in Hänigsen occurred here. In 1949 the shaft tube received new installations and potash production was resumed. The mine remained in operation until 1997. The production of potash was stopped in 1996 and that of rock salt in 1997. The bottom is at a depth of 1525 meters. Plans for an underground toxic waste dump were scrapped. The 650 and 750 m level probably still contains old weapons waste (detonators, grenades, combat agent Excelsior (10-chloro-9,10-dihydroacridarsin, Blaukreuz) and its precursor merodanoic acid). The rainwater from the site and the heap seepage water (around 10,000 m³/year) is led into the Thöse. The flooding of the mine is scheduled to be completed in 2028. The BUND criticizes this measure. The miners' association, founded in 1908, still exists today.

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The Wathlinger Kaliberg is the tailings dump of the Hänigser and Wathlinger mine in Lower Saxony-Riedel. This has a 100-year history. In the 1920s, the Hänigser Riedel mine was gradually shut down until 1927 as a result of the economic crisis. From 1936 onwards, the Wehrmacht built Riedel into an army mu- nitionsanstalt (Muna). Ammunition was stored in the mine. In 1946, during the evacuation underground, there was a huge explosion that killed 86 people. From 1950 onwards potash was mined again in Hänigsen. In 1987, miners set a world record in the Riedel mine: they reached a depth of over 1,500 meters The lowest point in potash mining in the world. Because the East German potash and rock salt mines were available again after reunification, K+S laid down in 1996 Saxony-Riedel silent. The future of the Wathlinger Kaliberg has not yet been decided.

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A stately manor house in a prominent location

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an imposing mountain, whether it is beautiful or not depends on each individual.

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