Guided tour of Lötschberg Base Tunnel.
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A masterpiece of railway technology: here you can take an exclusive peek inside the mountain.
A minibus will take you from Frutigen into the tunnel system, where you will visit the Mitholz train-control centre. A special window in the tunnel wall allows you to see what it looks like when a train rushes past. The test track – built to a 1:1 scale – and the 320-metre-wide emergency intervention staircase at the north portal are also impressive sights.