Hi Federico, to visit the tunnel there is to book it.
I can contact the company who has in charge the tunnel to receive and release in free license some photos.
Anyway Wikimedia Ch has started a project with the Federal Archives to store all material in an open repository.
Kind regards
On Thu, Jun 2, 2016 at 1:58 PM, Federico Leva (Nemo) nemowiki@gmail.com wrote:
The tunnel under the Gotthard was just opened, as you surely heard from the news: https://en.wikipedia.org/wiki/Gotthard_Base_Tunnel
Is someone going to visit the tunnel on June 4 or 5 to take photos? http://www.gottardo2016.ch/
Nemo