Southern Pacific's ROCHM waits for a helper engine to arrive while the TASNC cruises by at Castilla on Dec. 23, 1995.

Rio Grande's first EMD GP40-2 leads the Dirt Train local through Spanish Fork Canyon on a chilly New Year's Eve, 1994.

An SP SD40R, an SP GP40-2 and a D&RGW GP40 lead a 41 car KCOAF through Spanish Fork Canyon on February 5, 1995.

Union Pacific's Salt Lake City to Denver manifest grinds upgrade through the Red Narrows of Spanish Fork Canyon on Oct. 17, 2014. The MRONY is powered by UP 6328, an ex-SP AC4400CW, CSX 801, an ES... (more)

It is doubtful anyone will ever accuse the MK50-3 of being beautiful. One thing's for sure though, for better or worse, it is unique in the diesel locomotive world. Only six were produced by MK in... (more)

Three GP60s and a single SD45R lead SP's Roper to Denver Forwarder east through Spanish Fork Canyon on Feb. 19, 1995.

An 84 car Denver to Roper manifest glides west through Spanish Fork Canyon on an overcast January 2, 1995 afternoon.

A trio of new GE C44-9Ws and a veteran EMD SD40T-2 lead a 70 car Roper to Valley Camp coal empty through Spanish Fork Canyon on Jan. 2, 1995.

With the Chicago & North Western heritage engine in the lead, Union Pacific's Salt Lake City to Denver manifest climbs through the Red Narrows of Spanish Fork Canyon October 9, 2014. The three EM... (more)

A pair of SD40T-2s and two SD50s shove a heavy 126 lumber train east through Spanish Fork Canyon on Sept. 7, 1987.

DRGW train 18, the Rio Grande Zephyr heads east near Thistle, UT on July 3, 1977.

A Burlington Northern & Santa Fe trackage rights manifest glides west down Union Pacific's Provo Subdivision through Spanish Fork Canyon on July 24, 1997.

The Utah Railway has historically rostered interesting secondhand diesel locomotives. They acquired a quartet of RSD-15 'alligators' from the Santa Fe in 1975. The UTAH 402, 401, 400, 403 and RSD-... (more)

Union Pacific's PDVSC2-26 inspection special glides west through Spanish Fork Canyon approaching the Thistle Tunnels on July 26, 2014.

Union Pacific's PDVSC2-26 inspection special emerges from the Red Narrows of Spanish Fork Canyon approaching Rio on July 26, 2014.