Gotthard Base Tunnel ~ 57km Under Swiss Alps!

Some more construction porn, again thanks to pointer from MIT colleague Jonas, this time the Gotthard Base Tunnel (GBT), an epic railway endeavor burrowing under 57km of Swiss Alps to connect north and south in most efficient manner!

"Its main purpose is to increase total transport capacity across the Alps, especially for freight, notably between Germany and Italy, and more particularly to shift freight volumes from road to rail to reduce environmental damage caused by ever-increasing numbers of heavy lorries."