Bochum, Ruhr area, North Rhine-Westphalia, Germany, discharge of pit water, the mineral-rich shaft water from the disused Robert Mueser mine is fed into the Harpen ponds, also known as Werner ponds, from a depth of 500 m and then into the Ruhr

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Size: 6720px × 4480px
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Photo credit: © Rupert Oberhäuser / Alamy / Afripics
License: Licensed
Model Released: No

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