I wondered the same thing. And some horizontal stripes on the walls, so you
can maintain your sense of horizon.

Christopher A. Young
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On Mon, 29 Oct 2012 09:58:51 -0700 (PDT), DerbyDad03
it was pitch black for most the middle section. I hopped on the bike,
leaned the basket against the wall, and peddled as hard as I could
towards the light at the other end. For a few hundred feet I was
riding in pitch black with only the light at the other end for
comfort. It was pretty spooky! I was very familiar with the tunnel and

Why didn't you have a head light on the bike?