This is the place whre talgo trains change their gauge. 
Observe the crossing in front, the track on right is at 1435 , the
other, the one where the train is, is 1676. <BR>
Look at the light under the train, there is a place where an 
agent look that the wheel shift correctly.<BR>
The train after arriving lose its locomotive an is pushed by a shunter in the
gauige changer at low speed. When the trains exit on the other side of the 
20 m tunnel is taken the locomotive that will lead it to Geneve.<P>
Picture taken at Port Bou on 5-6-1989 by Leonardo boselli leo@dicea.unifi.it