In a waiting room of the future Porta Alpina Sedrun. An access to the station in the tunnel from and to Sedrun which was not realized. The length of these caverns is 38 m, the width 10 m and the height 5.5 m. Switzerland, Sep 15, 2016. (18/26)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70981241@N00">Kecko</a> from Rural area, Eastern Switzerland
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/kecko/29849419075/">SBB - Gotthard Base Tunnel GBT</a>