As you can see, this tunnel is over 2.5 km long. I did travel with lights for such occassions.
     The road in this and other tunnels did not have much of a shoulder. It was quite stressful not only due to the lack of space but to the noise of passing vehicles that reverberated through-out the tunnel.
     Some of these tunnels had roads that split in two directions...aahhh, Japanese engineering!
Kamikochi Cycling Trip
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