The sun continues to dip lower in the western sky as a southbound empty sand train from Fort Collins, Colorado to Eola, Illinois dips through the "sag" just south of Berthoud, Colorado on July 12, 2016.
Pictures taken with the strong contrast between Rail and Light in Dawn/Dusk/Sunrise or Sunset.
Check the Flickr Group for more! www.flickr.com/groups/railway_silhouettes/