The sun is technically minutes away from setting, but a thick layer of clouds to the west is blocking out the light, effectively creating blue hour with very low light. The ISO is bumped up (and the grain is definitely apparent) as UP's North Yard to Grand Junction manifest heads west out of Leyden. This exact same train attempt to head west just over 24 hours earlier, but stalled out due to two engines failing on the climb out of Rocky. The entire train backed down close to North Yard for new power. This is the second attempt (which will be successful).
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