Light at the end of the tunnel...

... is the light of an oncoming train. 
A very dull day with lots of drizzle, so what better way to spend it than in a former rail tunnel along a leisure trail. I left my bike light flashing so that other users would not bump into me.
The light trails were from a small group of passing cyclists. 
Extra: Jogger at the opposite end of the tunnel. I think this has simpler composition, but I'm a sucker for light trails. 

Many thanks to Pinkhairedlady for hosting the openings themed mono monday.