On April 9, 2016, an eastbound Union Pacific loaded oil train pops out of Tunnel 1 into a small pocket of sunshine (literally) on a gorgeous spring afternoon in Coal Creek Canyon.

The sun comes in and out as loaded oil cans from Wash, Utah descend the 2-percent grade as the train negotiates the horseshoe curve in Coal Creek Canyon just west of Denver along the Moffat Road o... (more)