Connaught Tunnel is an underground passageway for vehicles.
Connaught Tunnel . The Connaught Tunnel is a railway tunnel under the Selkirk Mountains in southeastern British Columbia , Canada , near the city of Revelstoke . Originally double tracked , it was realigned with a single track in 1959 to accommodate higher freight cars . A tunnel is an underground passageway , dug through the surrounding soil/earth/rock and enclosed except for entrance and exit , commonly at each end .