Plasser & Theurer 08-475 Unimat 4S ballast tamper of Kölngleis
working in the western switch area of the new overtaking station Dorsfeld (on
Cologne-Aachen) on 8 August 2001. The close-up shows the main tamping device
(next to the worker) and the operator cab on the right.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>