1882 - 2021
Beginning of time period
End of time period
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31. December 1923
Water replaces coal
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31. December 1992
Tunnel vision
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19. February 1995
Green light for the network option
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26. September 1992
Yes to the NRLA
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20. April 1993
Pressure from the environmental movement
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11. July 1988
Five options
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22. August 2013
A million visitors
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19. June 1970
The tunnel plan
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16. December 2003
Yes to the Ceneri Base Tunnel
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15. April 2004
The costs