Sunrise is breaking as UP 5561 (ES44AC) leads a freight out of the Cheyenne Yard and under the former Colorado and Southern Railroad bridge (now BNSF).
A continuously growing album of photos that IMHO reveal the awesome and seldom-seen beauty of the railroad world from the dimming of day to dawn's early light! From dusk to dawn, trains roll on! (I'm still finding gems of sunset-to-sunrise surprises!)