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Red Box is the name of the junction of the 
Angeles Crest Highway
The Angeles Crest Highway is a two-lane highway over the San Gabriel Mountains, in Los Angeles County, California. It runs through the San Gabriel Mountains National Monument and the Angeles National Forest. With the exception of a section in ...
, the Mt. Wilson-Red Box Road, and the Rincon-Red Box Road. It is located at the saddle between Mount Lawlor and San Gabriel Peak. The saddle separates the upper Arroyo Seco drainage from the West Fork of the San Gabriel River.
References
Unincorporated communities in Los Angeles County, California San Gabriel Mountains Unincorporated communities in California {{LosAngelesCountyCA-geo-stub