UP 4404 (SD70M) heads into storm light as storms east of Aurora, Colorado drop inches of rain.

UP 4404 (SD70M) leads the special heritage car train into Aurora, Colorado on its way to Denver.

UP 4404 (SD70M) arrives in east Denver as storm clouds in the background bring rain to the eastern part of Colorado.

Late evening storm light catches UP 4404 (SD70M) as it brings a heritage car passenger train towards Denver, Colorado.

R in the Road. An RTD R Line train bound for Lincoln is seen curving onto E Ellsworth Ave from private right-of-way between 2nd Ave & Abilene and Aurora Metro Center Stations.

An outbound train to Denver Airport rolls into Peoria Station after just meeting an inbound train minutes prior

Suburban Light Rail. A Lincoln-bound R Line train is seen approaching 2nd Ave & Abilene Station. The R Line is the only RTD light rail line that does not run through Downtown Denver or t... (more)

LDJ04 returns west from GM with a pair of GP15-1s and a GTW autoparts boxes.

RTD commuter train 4006 (Hyundai Eagle P3) takes the elevated track as it heads from Aurora to Denver International Airport.

Duo of EMD GP15-1, UPY's 546 and 681, leading a local train of Union Pacific by UP Limon Sub in Aurora, Colorado.

With a pair of CSX road motors on the point a wind-turbine blade train departs Denver eastbound on Union Pacific's Limon Subdivision, better known amongst locals as the 'KP'. Each massive blade sp... (more)

Recrewed, eastbound auto-rack unit train departs Mesa siding with track warrant authority to proceed to MP 594.5, West Byers, on the Limon sub. Eastbound run thru trains often recrew at Mesa.

Westbound unit train of coal empties crosses Tower Road as it passes through Aurora, Colorado, descending a 1.0 % grade on the Limon Subdivision.

The rear of an empty coal train hangs over top of the hill at the west end of Mesa on a warm May evening.

Scattered showers just minutes earlier have given way to bright summer sunshine and a brilliant rainbow over the plains east of Denver.