Rhaetian Railway's Glacier Express on the Landwasser Viaduct entering the Landwasser Tunnel.
The Glacier Express is a 7½ hour railway journey across 291 bridges, through 91 tunnels and across the Oberalp Pass at 2,033 meters (6,670 ft) in altitude. The entire line is metre gauge, and large portions of it use a rack-and-pinion system both for ascending steep grades and to control the descent of the train on the back side of those grades.
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