Amtrak train No. 6 is about to overtake an eastbound UP loaded coal train in the siding at Rocky where he'll tie down as Denver has no room for them.

It's just after sunset with temperatures close to zero as Amtrak train no. 6, the California Zephyr, wastes no time descending the grade at Coal Creek Canyon during the cold blue hour.

With the temperature close to zero, Amtrak train no. 6, the California Zephyr descends the grade at Big Ten Curve with the Denver Metro area in the background.

With station work complete and a long road ahead, Amtrak 6 highballs Martinez! The San Joaquin to the left was holding out of the station while No. 6 worked so that they wouldn't cut between them ... (more)