This is a picture of not a tunnel,
but the bridge that goes into the Millwood Mill in Millwood, VA.
It is very unique. It served as a mote that connected to the pond
which was the energy source for the mill.
I have a few other pieces
in the works on the mill.
The picture started out as a B&W
I added the green tones of the plantlife that now takes
the place of the water.