The first train in the morning to come through the Moffat Tunnel is a Union Pacific freight led by UP 7047 (AC4460W). While the sun has not yet lit up the valley, the tops of the mountains are catching the alpine glow.
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!)