related: documentary on the Gotthard base tunnel: https://www.youtube.com/watch?v=TaYtrsvzfh0 https://www.youtube.com/watch?v=TaYtrsvzfh0 better video, only G

related: documentary on the Gotthard base tunnel: https://www.youtube.com/watch?v=TaYtrsvzfh0 https://www.youtube.com/watch?v=TaYtrsvzfh0 better video, only German though: https://www.youtube.com/watch?v=93O7YmBEb7A https://www.youtube.com/watch?v=93O7YmBEb7A The last video is also interesting to watch today because they mention a lot of the safeguards they put into the system (such as measuring the temperature of the train axles some km before they enter the tunnel and redirect the train to the old Gotthard track if the temperature higher than some threshold). But still recently on August 23 there was this accident where a freight train derailed inside the tunnel.