With dynamic brakes humming, an eastbound Union Pacific coal train exits 174-foot Tunnel 4 west of Plainview, Colorado, on February 28, 2011. One of the massive Flatiron rock formations towers abo... (more)
Through the Flatirons On February 28, 2011, a Union Pacific coal train descends the Front Range of the Rockies. The train is exiting Tunnel 4, threading Tunnel 3, and is going through a... (more)