tunnel 34

Photo

Ptarmigan Tunnel

Photo

St. Clair River Tunnel

Photo

Westmoreland Tunnel

Photo

Union Canal Tunnel

Photo

Chattanooga, Harrison, Geor...

Photo

Cumberland Mountain Tunnel

Photo

Stumphouse Tunnel Complex

Photo

Entrance to St. Clair tunne...

1900

Photo

Detroit River tunnel, Detro...

1910

Photo

Jenson Tunnel

Photo

Approach to the Detroit Riv...

1910

Photo

Sinking last tubular sectio...

1900

Photo

Sinking last tubular sectio...

1910

Photo

West portal, Hoosac Tunnel,...

1900

Photo

East portal, Hoosac Tunnel,...

1900

Photo

St. Clair tunnel, Port Huro...

1900

Photo

Ste. Claire i.e. St. Clair ...

1900

Photo

East portal, Hoosac Tunnel,...

1908

Photo

West portal, Hoosac Tunnel,...

1908

Photo

Tunnel 4 from 5, Temasopa s...

1880