The tail modules of the tunneling machine "Tosca", which will drill the eastern
tube of the new underground line, seen from the rear end on 22 April 2006.
These modules contain several devices neccessary for the operation of the
machine, for example slurry pumps for the bentonite suspension, the segment
magazine and ventilation pipes. The modules wheels are tilted, as they will run
on the segmental lining. The narrow gauge train which brings the concrete
segments enters the modules on the lower level.
<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>)