BNSF 7647 (ES44DC) leads a freight past the Three Oaks Ranch in Castle Rock, Colorado as it runs south on the Joint Line.

A slow roll of some very large turbine blades climbs through the S curve in south Castle Rock, CO.

BNSF 5235 (Dash9) leads an intermodal train south on the Joint Line through Castle Rock, Colorado.

BNSF 5328 (Dash9) runs south on the Joint Line through Castle Rock, Colorado.

BNSF 5235 (Dash9) leads an intermodal train through Castle Rock, Colorado as it runs south on the Joint Line.

CSX 938 (ES44AC) leads a pair of other CSX and a CP unit south on the Joint Line through Castle Rock, Colorado.

BNSF 6648 (ES44C4) leads a priority train through Longmont, Colorado as it heads towards Denver on the Front Range Sub.

BNSF 5328 (Dash9) runs south on the Joint Line through Castle Rock, Colorado, past some new high-powered lines that have been installed to accommodate more development.

BNSF 5235 (Dash9) leads the intermodal train through the curves in Castle Rock, Colorado.

BNSF 610 (Dash9) leaves Castle Rock, Colorado as it heads south on the Joint Line.

Former AT&SF Warbonnet BNSF 610 (Dash9) runs southbound on the Joint Line through Castle Rock, Colorado as the last minutes of evening sun casts a glow of the engine.

BNSF 5328 (Dash9) leads a freight past the Three Oaks Ranch in Castle Rock, Colorado.

On the Joint Line between Denver and Pueblo, Colorado is a freight led by Santa Fe merger painted SD40-2 5022 near Castle Rock on August 24, 1988. ... (more)

BNSF 784 (Warbonnet Dash 9) shoves a grain train through Castle Rock, Colorado.

CPKC 9836 (AC4400CW) leads a grain train through Castle Rock, Colorado as it heads south on the Joint Line.