10.03.2017, Oberhausen, North Rhine-Westphalia, Germany - Emscher conversion, new construction of the Emscher AKE sewer, here driving at shaft 17, the ecological conversion of the Emscher system consists of the construction of a central sewerage system in the Ruhr area, the construction of sewer tunnels and the renaturation of the Emscher and its tributaries. 00X170310D860CAROEX.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!]