During the celebration of 125 years Kölner Verkehrsbetriebe (KVB) at
Neumarkt on 25 May 2002, thermite welding of rails was demonstrated. The melted
steel in the form is covered with sand.
<p>
Digital photo by
<a href="http://www-users.rwth-aachen.de/christoph.schmitz2/index.html">Christoph
Schmitz</a>