Amtrak’s eastbound California Zephyr descends the grades of the Moffat Tunnel route rounding Big 10 Curve between Eisele and Rocky, Colorado, on the afternoon of May 4, 2018. Leading the train i... (more)
Amtrak’s California Zephyr climbs the front range of the Rocky Mountains between Rocky and Clay, Colorado, led by GE P40DC No. 821 on September 16, 2014.