View onto the upgraded line Cologne-Düren (ABS 4) looking towards west near km 32.8 on 23 August 2001. The old line is on the left. In the center the first ballast layer for the highspeed tracks is prepared. In the foreground the catenary will be fitted with a five-field backbone span. Between the thicker masts for the tensioning assemblies are four pairs of masts prepared for double brackets. Some new rails are stored beneath the old line.
Digital photo by Christoph Schmitz