Black Hills Central 2-6-6-2T Mallet No. 110 takes the eastbound trip from Hill City across the Old Hill City Highway west of Keystone, South Dakota, on July 11, 2018.

A pair of Rapid City, Pierre, & Eastern SD40-2's lead the Dakota Junction-Rapid City train north through Wayside, Nebraska, just south of the state line with South Dakota, on July 9, 2018.

A westbound BNSF coal empty rounds the big curve coming down from Breezy Point on Crawford Hill in Nebraska, on July 10, 2018.

A pair of Rapid City, Pierre & Eastern SD40-2's Nos. 3464 and 3459 lead the Dakota Junction-Rapid City train (LDJRC 09) next to a farm ditch south of Oelrichs, South Dakota, on July 9, 2018.

Union Pacific "Olympic Torch Relay" SD70M No. 2001 leads the IDITAX west around the big sweeping curve through "Buffalo Bend" outside of Potter, Nebraska on July 5, 2018.

BNSF's Denver-Provo manifest is seen patiently waiting in the siding at Tolland, Colorado for a two hour late Amtrak 6 on June 24, 2018.

BNSF's Denver-Provo manifest led by BNSF ES44C4 No. 8134 continues to climb the grade west through Rollinsville, Colorado on June 24, 2018.

In the late afternoon sun, Union Pacific SD9043MAC No. 3663 and Norfolk Southern SD70ACU No. 7248 lead the GMGLTU 16 up Track 3 at Harriman, Wyoming on June 18, 2018.

In the early evening hours, UP's MNPRO-18 (North Platte-Roper Manifest) heads west through the searchlight signals at the east end of Hermosa, Wyoming on June 18, 2018.

It's just after 6 AM as BNSF AC4400EV No. 5747 leads the Cheyenne-Denver manifest across 9th Avenue in Longmont, Colorado on June 17, 2018. The train will do a pick-up in the East Yard before cont... (more)

The second of two thunderstorms approach as an empty BNSF sand train trundles down the middle of Atwood Street in Longmont, Colorado on May 22, 2018.

The sun peeks out for a brief moment after a series of thunderstorms dumped rain and hail along the Front Range. Seen here, an empty sand train races into the setting sun just outside of Niwot, Co... (more)

A pair of BNSF "Heritage 1" painted C44-9W's lead another Dash 9 on the Provo-Lincoln manifest train down the 2-percent grade in Pinecliffe, Colorado on May 21, 2018.

A slow moving thunderstorm dumping heavy rain and hail trundles northeast in the background as a BNSF empty sand train rolls through the siding at Broomfield, Colorado where they will wait to go i... (more)

While BNSF's Denver-Laurel manifest does work at Highland, three cows run across a small field towards the barb wire fence along 115th Street at Longs Peak, Colorado on May 15, 2018.