Switzerland postcard

The official schedule for this one lane, 1.2k tunnel is that from the top of the hour until a quarter past, traffic comes downhill, toward me. From a quarter past for the next 45 minutes, traffic goes uphill. I discovered, somewhat disconcertingly, that this schedule is viewed with a certain flexibility by locals in tractors pulling wide hay laden trailers. Just what you’d expect: Headlights, swerving, screaming.