Union Pacific's Big Boy #4014 (4-8-8-4) runs past the silo in Platteville, Colorado as it heads south on the Greeley Sub towards Denver.

UP 4404 (SD70M) runs an officer's special south on the Greeley Sub through Platteville, Colorado.

UP 8390 (SD70ACe) waits on a siding in Platteville, Colorado for a northbound freight, and then will proceed south to Denver on the Greeley Sub.

UP 2646 (ET44AH) passes through Platteville, Colorado on its way to Denver on the Greeley Sub.

UP 8930 (SD70ACe) leads a freight through Platteville, Colorado on the Greeley Sub.

UP 2646 (ET44AH) leads a string of full auto-racks south on the Greeley Sub through Platteville, Colorado.

Two Union Pacific freights meet at Platteville, Colorado, with each crew member giving a wave.

UP 5630 (AC4400CW-CTE) highballs a stack train south on the Greeley Sub through Platteville, Colorado.

UP 6965 (ES44AC) leads a power heavy freight through Platteville, Colorado.

UP 7045 (C44ACM) leads a freight through Platteville, Colorado as it heads south on the Greeley Sub.

UP 2537 (ES44AC) leads a power move south on the Greeley Sub through Plattville, Colorado.

UP 8006 (ES44AC) leads a power heavy train south on the Greeley Sub through Platteville, Colorado.

Old signal poles still line the tracks as UP 4363 (SD70M) brings a freight into Platteville, Colorado.

UP 4363 (SD70M) works the siding in Platteville, Colorado on the Greeley Sub.

UP 4922 (SD70M) leads a quartet of engines, including a BNSF motor, at Platteville, where it will pick up additional cars and then head further south on the Greeley Sub.