1882 - 2021
Beginning of time period
End of time period
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4. July 1999
Construction begins
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1. June 2006
Construction of the Ceneri tunnel
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26. November 2000
Geology and surveying
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17. May 2010
From drawing to 3D model
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10. December 2016
Costs and benefits
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17. May 2019
Escher forever?
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31. December 2015
Tunnels of the world
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14. October 2008
Traversing the Piora Basin
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3. October 1991
Parliament backs the NRLA
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3. October 1993
Work begins