Connaught Tunnel is not in Ireland.
For the Connaught tunnel in East London , England , see Eastern Counties and Thames Junction Railway At the time it was built , the Connaught Tunnel was the longest railway tunnel in North America . Mount Macdonald is a mountain peak located in the Selkirk Mountains of British Columbia , Canada , immediately to the east of Rogers Pass in Glacier National Park . The Mount Macdonald Tunnel , located in the vicinity of Rogers Pass in the Selkirk Mountains of British Columbia , Canada , is a railway tunnel constructed through Mount Macdonald by the Canadian Pacific Railway ( CPR ) .