the tunnel is set to open for rail transport in twenty twenty six the costs have been estimated ten billion euros the tunnels construction is politically controversial it's an important infrastructure project say proponents but critics say it's a black hole sucking up billions. looka has overseen many explosions but they're never routine the preparations last several hours the fuse lines are connected last. seen the point i'm going to cure. since we're in a closed space there's a big pressure wave the whole imagine shakes as does the ground and he threw a feat it will convey the it feels like a major earthquake and that that all.