An eastbound Union Pacific coal load descends through the horseshoe curve encircling the mouth of Coal Creek Canyon at mile 22.6 west of Clay, Colorado, on October 22, 2012. In this view, two GE A... (more)

The headend passes over its rear end as it snakes through Coal Creek Canyon. The grade here is very evident based on the amount of elevation gained in less than a train length.

Ski train heads west toward tunnel 1 on the x-Rio Grande, now UP.

Eastbound BNSF trackage rights train rolls through Coal Creek Canyon

This eastbound loaded coal train fills Coal Creek Canyon

Westbound empty heads into the tunnel district on the UP Moffat Tunnel Sub. Cano Powershot S1 IS

Westbound rear DPUs head into Tunnel 1 on the UP Moffat Tunnel Sub. Canon Powershot S1 IS