A Big Boy hauls reefers towards Hermosa tunnels. It looks pretty lush with vegetation this time of year.

There's plenty of steam leaking and visible because of the cold as this Big Boy charges up Sherman Hill.

An early challenger just west of Cheyenne.

A challenger with a string of reefers on Archer Hill.

A challenger on Sherman Hill

A Big Boy hammers out of Cheyenne and heads for the climb to Sherman Hill

Union Pacific E9A and 4-6-6-4 "Challenger" rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Union Pacific 4-6-6-4 "Challenger" number 3985 and E9A number 949 rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Union Pacific 4-6-6-4 "Challenger" number 3985 and E9A number 951 rest in the roundhouse at the Cheyenne, Wyoming shops on March 25, 2017.

Westbound departing Cheyenne, WY.

A clean SD70AH leads UP Train MHKNP 20 up Archer Hill just west of Cheyenne on the UP Sidney Sub. This monster train has 4 mid-train DPU's cut in about 90 cars back.

Locomotives: UP 8770, U... (more)

After departing the depot at 1700 sharp, UP Train PDVDV1 23 stomps through the UP Larmie Sub. crossovers and under the classic UP Signal Bridge at MP 511 and out of town, headed back to Denver wit... (more)

The Denver Post Train is in the homestretch into Cheyenne, running as UP Train PDVDV1 23 behind 844 and 1989. To the right of the train is UP Train MHKNP 20, which will wait for the special to ge... (more)

UP 9289 leads a quintet of C40-8's just west of Cheyenne, WY in October of 1989.