Japanese tunnels are magical, you can go in one end in Spring and come out the other in Winter!
The above photo should be at the start but I don’t know how to move it.
Not the recommended method of sightseeing though, spending 90% of the trip in tunnels.
Today I perfected the art of tunnel-gap photography: In dark tunnel, turn camera on, wait for light at end of tunnel, view-finder to eye, point and shoot as soon as it’s light, hope for the best – you can edit or delete later, enter next tunnel.