A westbound BNSF coal train passes through Barr, Colorado, on the Brush Subdivision just before sunrise on December 2, 2010.

A pastel sunrise greets a westbound BNSF freight at Barr, Colorado, on December 3, 2010. Barr is located east of Denver on BNSF’s Brush Subdivision.

BNSF ZDENCHI (Denver to Chicago priority intermodal) passes Barr Lake, Colorado, framed by cottonwoods surrounded by water due to almost-spring snowmelt on March 15, 2011.

Passing ice on the shore of Barr Lake, a westbound BNSF coal train approaches Barr, Colorado, on January, 6, 2011.

A colorful lash up consisting of four different Amtrak schemes make up the "Exhibit Train" and "California Zephyr consist. The "Exhibit Train" will be dropped off in Denve... (more)

The sun begins to rise as BNSF no. 641 leads another BNSF Dash 9 on the Omaha, NE to Denver, CO manifest at Barr Lake State Park near Brighton, CO on January 02, 2014.

The hot shot Chicago, IL to Denver, CO Z-Train heads west towards Denver at Barr Lake near Brighton, CO.

Domestic containers from JB Hunt and Schneider make up most of the double stacks on the Denver, CO to Chicago, IL Z-Train at Barr, CO. January 02, 2014.

After meeting a westbound manifest at Barr, the Denver - Chicago Z-Train proceeds east just after sunrise at Barr Lake State Park. The train will go into the siding at Tonville to meet a late Amtr... (more)

It's just after sunrise as the Omaha, NE to Denver, CO Manifest slows for the diverging approach at Barr Siding in Barr Lake State Park, CO, where they'll meet the eastbound Z-Train.

It's just about mid-morning on this sunny September day as a loaded coal train passes through Barr Lake State Park near Brighton, CO. September 28, 2013.

The Denver to Chicago intermodal train ZDENCHI hustles by Barr Lake, Colorado, on January 6, 2011, at sunrise.

Two SD70MACs are the DPUs on this Amarillo, TX bound coal load as they pass through Barr Lake State Park after meeting the Denver - Chicago Z-Train at Tonville.

BNSF’s Hudson Turn passes some of the last light of the day as the sun is replaced with the gray gloom of a late winter day at Barr Lake, Colorado, on March 15, 2011. Barr is located at mile 524... (more)

Amtrak passengers enjoy the late afternoon sun from the Sightseer Lounge as we pass a loaded coal train that is parked in the siding at Barr, Colorado.