A view of the Ptarmigan Tunnel Pass in Glacier National Park. The park is found in a section of the Northern Rocky Mountains, and straddles the Montana and Canadian borders. (Michael May)

Scaling Swiftcurrent Pass

A view of the Ptarmigan Tunnel Pass in Glacier National Park. The park is found in a section of the Northern Rocky Mountains, and straddles the Montana and Canadian borders.

Credit: Michael May