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Lötschberg Tunnel:see under Lötschberg RailwayLötschberg Railway
, electrical railroad, crossing the Bernese Alps from Thun, W central Switzerland, to Brig, on the Rhône River, S Switzerland. It passes through the Lötschberg Tunnel (9 mi/14 km long; alt.
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a tunnel in Switzerland, one of the world’s longest. Built beneath the Bernese Alps at a level of 1,244 m, length, 14.5 km. An electric railroad passes through the Lötschberg Tunnel.