Under forest fire-caused smoky skies, BNSF 7601 (ES44DC) leads a freight towards Castle Rock, Colorado.

BNSF 9182 (SD70ACe) rounds the corner at Castle Rock, Colorado pulling a heavy coal train south on the Joint Line.

BNSF 8021 (ES44C4) leads a long line of empty auto racks towards Castle Rock, Colorado.

BNSF 9182 (SD70ACe) leads a coal train past a string of autorack cars at Castle Rock, Colorado.

Smoke from the many wildfires in western states creates a haze through which BNSF 7601 (ES44DC) leads a freight southbound on the Joint Line.

UP 7511 (AC45CCTE) leads a loaded coal train through a curve in Castle Rock, Colorado.

UP 8663 (SD70ACe) leads a tripple headed freight south on the Joint Line through Castle Rock, Colorado.

After having run through Castle Rock, Colorado the three UP engines on a heavy freight notch up to climb the grade towards Larkspur, Colorado.

BNSF 9133 (SD70ACe) shows that ACe's and coal are still king for now on the southbound Joint Line between Denver and Colorado Springs, Colorado.

An entire coal train can be seen running between Sedalia and Castle Rock, Colorado as it heads south on the Joint Line.

Denver Rock Island Railroad's 1083 (SW1500) pulls a cut of cars across the street in the former Stockyards area of Denver, Colorado.

The snow is falling as BNSF ACe 9040 sits on a ready track at the site of the old Castle Rock Depot. The engine will help push a train over the Palmer Divide if needed.

BNSF 8021 (ES44C4) pulls a long string of auto racks up the grade to Castle Rock, Colorado.

BNSF ACe 9272 leaves behind Castle Rock, Colorado as it travels south on the Joint Line.

BNSF 9272 SD70ACe muscles a loaded coal to Castle Rock, Colorado.