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1959 Map of Pacifico Mountain

Name: 1959 Topographic Map of Pacifico Mountain
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

Pacifico Mountain dominates the high elevation of the Angeles National Forest in this 1959 survey, updated with revisions through 1974. The landscape is defined by the steep canyons of the San Gabriel Mountains, including Santiago Canyon and Aliso Canyon, where water sources like Aliso Spring and Fountainhead Spring supported early ranching and mining. The Southern Pacific railroad line cuts through Soledad Pass near the settlement of Vincent, marking a critical transportation corridor through the rugged terrain.

Evidence of historical activity is scattered across the slopes, from the Gold Queen Mine near the center of the sheet to several private ranch holdings such as Niles Ranch, Montgomery Ranch, and Wagonwheel Ranch. Recreation areas are well-documented, with the Little Rock Reservoir and multiple campsites, including Upper Pacifico Campground and Lower Pacifico Campground, reflecting the area's development for public use. The Angeles Forest Highway serves as the primary artery connecting these high-altitude sites and mountain summits like Mt Emma.