Adjacent to the Santa Ana River’s Prado Dam is the "station" named Prado Dam. At one time it was in rural Riverside County, at the eastern end of Santa Ana Canyon, in which the Santa Fe Railway built their mainline along the Santa Ana River through a bucolic pass. Today, the old Santa Fe Third District mainline is now BNSF’s triple track San Bernardino Sub, the two-lane highway through the Canyon has been replaced by the 91 Freeway and the Canyon’s ranches and orange groves have given way to lots of expensive homes. Today, Prado Dam (the railroad location) is now part of the city of Corona. BNSF 11,142-foot train Q-NWHLAC6-30 is heading for Los Angeles, and is about to enter Santa Ana Canyon, the last geologic obstacle before entering the greater Los Angeles basin. (Corona, California – February 5, 2021)