guac: "The Great Northern Railway Eight-Mile Tunnel is dedicated on January 12, 1929. https://www.historylink.org/file/10705"

The Great Northern Railway Eight-Mile Tunnel is dedicated on January 12, 1929. historylink.org/file...

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On January 12, 1929, Great Northern Railway begins service through its newly constructed Eight-Mile Tunnel, running between Scenic (elevation 2,247 feet), on the west slope of the Cascade Mountains,