27.03.2026, Germany, Berlin - View from the roof of the machine house at the Ruhleben sewage treatment plant of the mixed sludge buffer tanks. In the background on the left the Ruhleben waste incineration plant. 00R260327D103CAROEX.JPG [MODEL RELEASE: NO, PROPERTY RELEASE: NO (c) caro images / Ruffer, http://www.caro-images.com, [email protected] - In case of using the picture for any purpose, please contact the agency - the picture is subject to royalty!]