18.10.2025, Germany, Bottrop, North Rhine-Westphalia - Autumn on the renaturalised Boye, the tributary of the Emscher, which has been redesigned into a near-natural watercourse. Flood protection through newly designed floodplains. Following the construction of a parallel sewer, the Boye is now free of sewage and belongs to the Emscher river system and thus to the Emscher conversion. It was previously an open, above-ground sewage canal, a mixed water canal with surface water and sewage. 00X251018D047CAROEX.JPG [MODEL RELEASE: NO, PROPERTY RELEASE: NO (c) caro images / Oberhaeuser, 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!]