All Subjects
      All Types

        Info

        Grades

        1-12

        Permitted Use

        Stream, Download, Share, and Modify


        1 Favorites
        33 Views

        Control Tunnel | Human Impact on the Physical Environment | Geography

        11th October 1966: One of the control tunnels of the Grande Dixence Dam near Zermatt in Switzerland. (Photo by Ring/Central Press/Getty Images)

        You must be logged in to use this feature

        Need an account?
        Register Now