FranzWeber 368 Posted September 27, 2020 from Wikipedia: Since 2008, the centre of the city has reported to have risen some 12 centimetres (4.7 in),[4] after initially sinking a few millimeters.[5] This has caused considerable damage to buildings in the city centre, including the historical town hall. The cause for this geological change has been identified as a drilling operation conducted in the summer and autumn of 2007 to provide geothermal heating to the city hall. The drilling perforated an anhydrite layer and caused high-pressure groundwater to come into contact with the anhydrite, which then began to expand. By 2010, some sections of town had risen by 30 centimetres (12 in).[6] In July 2013, no end to the rising process was in sight.[7] Link to comment
Dana C Doherty 391 Posted October 8, 2020 Franz, I love the photo's subject as well as the artistic treatment. And I love the explanation behind it. I know now things I didn't before seeing your post. Thank you and take care of yourself. Dana Link to comment
FranzWeber 368 Posted October 9, 2020 Dana, thank you for your kindly comment. Best regards, Franz Link to comment
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