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1955 Map of Castle Rock Ridge

Name: 1955 Topographic Map of Castle Rock Ridge
Creator: U.S. Geological Survey
Published: 1976
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1976

About this map

Castle Rock Ridge defines the high ground of the Santa Cruz Mountains in the mid-1950s, following the complex geologic line of the San Andreas Rift Zone. This survey captures a landscape of educational and youth institutions tucked into the canyons, from Alma College and the Montezuma School in the east to Stuart Camp and Redwood Camp further west. The terrain is marked by steep ridges and deep gulches, where small water bodies like Lake Ranch Reservoir and Loch Lomond provided critical local resources before later regional expansion.

Evidence of early mountain life remains visible through family-named landmarks such as Uncle Billys Cabin and Briggs, alongside established sites like Villa Montalvo. The map also traces the winding path of Skyline Blvd as it navigates the summit between the Santa Clara and Santa Cruz county lines. Significant peaks and rock formations, including Mount Bielawski, Castle Rock, and The Peak, serve as primary landmarks for this timbered and rugged upland region.