Spiral Tunnels And Tunnels On A Curved Alignment
Lists of spiral (helicoidal) tunnels and tunnels on a curved alignment on railway lines worldwide.
A part of a line is bracketed, if it is located in a country other than that mentioned in the specific table:
Example: :(Lausanne – Montreux – Sierre – Visp – Brig – ) → Switzerland
Read more about Spiral Tunnels And Tunnels On A Curved Alignment: References
Famous quotes containing the words spiral and/or curved:
“The spiral is a spiritualized circle. In the spiral form, the circle, uncoiled, unwound, has ceased to be vicious; it has been set free.”
—Vladimir Nabokov (1899–1977)
“They are not flat surfaces
Having curved outlines.
They are round
Tapering toward the top.”
—Wallace Stevens (1879–1955)