Two Belgian State Railways (SNCB) class 5500 diesel-electrics
about to enter Trois Bornes tunnel en route from Gare de
Monzen, Belgium to Aachen, Germany.
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The tower on top of the range demarks Trois Bornes
("Dreilaenderpunkt" in German, "Drilandenpunt" in Dutch), the
place where Germany, Belgium, and the Netherlands adjoin.
This is the Belgian side of the tunnel...
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Photo was taken in October 1994.

Photo and scan by Markolf Gudjons <markolf@lfbs.rwth-aachen.de>.