Following a major realignment of the route and assumption into the state highway system around 1922, the main Midland Trail alignment in California bypassed early stagecoach-era stops at Freeman and Willow Springs and at the Neuralia railroad siding, and now routed through Red Rock Canyon to Mojave. The earlier alignment took a high line route to the west in the Sierra Nevada and Scodie Mountains foothills around it following the Los Angeles Aqueduct route past Jawbone Canyon, thence following the Southern Pacific railroad tracks through Rosamond and Lancaster and on to Los Angeles, following the route that was later assigned to U.S. Route 6—the Sierra Highway) in 1937.
Various alignments of this portion of the trail followed the late 19th century Twenty-mule team roads built to haul gold from the Cerro Gordo Mines across the Mojave Desert. and roads built for the early 20th century construction of the Los Angeles Aqueduct.
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