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The twin-bore TGV tunnel between Perpignan and Figueres was completed on 17th February 2009 and opened for traffic on 19th December 2010. I had observed it keenly from the start five years earlier and was particularly interested in its effect on nature in and around its workings. The engineering side was also remarkable.
About a kilometre north of the tunnel entrance the line crosses the river Tech via a massively constructed bridge.