Would be nice if the rails were different from standard rails. I started to work on this, but I'm no graphics artist; but have a pretty good idea...
make the rails more brown instead of gray; and remove most of the underbed... and add a jitter to the rails...
http://epod.usra.edu/.a/6a0105371bb32c970b017c31743c78970b-pi
google image search 'abandoned railroad tracks'
the bed can pretty easily be done by like magic wand selecting the dark area under the ties and inverting the selecting and deleting; but then the boards and rails look too good.
