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Transandine Railway,former rail line, 156 mi (251 km) long, between Mendoza, Argentina, and Los Andes, Chile, traversing the Andes at Uspallata Pass. Opened to traffic in 1910, the railway rose to c.10,500 ft (3,200 m) at the long tunnel on the international boundary. Tunnels and snowsheds protected sections of the line. A glacial flood in 1934 destroyed 77 mi (124 km) of the Argentine section, but it was later rebuilt. The last passenger train ran in 1978, and freight traffic ceased in 1982.
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