Engine 8154 leads a westbound freight over the Crystal Creek trestle near West Glacier, Montana.

Engine 7511 leads a westbound freight train along the banks of the Flathead River, skirting Glacier National Park's southern boundary.

Engine 7723 leads a westbound freight across the East Glacier, Montana trestle.

Engine 7723 leads a westbound freight along the southern border of Glacier National Park, Montana.

Engine 4135 on a snowy December day at Brimstone Creek, Montana.

Engine 5106 leads a westbound freight through West Brimstone, Montana on a snowy December day.

Engine 6838 pulls into the Whitefish, Montana yard for a crew change before heading west.