Amtrak’s westbound California Zephyr paces the Colorado River on Union Pacific’s Dotsero Cutoff between the sidings of Range and Dell west of Burns, Colorado, on June 6, 1998. GE P42DC Nos. 81 and 100, along with B32BWH No. 500, power the 19-car train. The view is from Road 39, the Derby Mesa Loop off of Colorado River Road.