5536 and 5502 are working hard to pull a long freight train up to the
Gemmenich tunnel, coming up from Aachen West on 29 January 2004. In a few
hundred meters they will reach the end of the 25 ‰ grade.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>
(<a href="mailto:christoph.schmitz2@post.rwth-aachen.de">christoph.schmitz2@post.rwth-aachen.de</a>)