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1991 Map of Castle Rock Ridge

Name: 1991 Topographic Map of Castle Rock Ridge
Creator: U.S. Geological Survey
Published: 1995
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1995

About this map

Castle Rock State Park and the ridge-top terrain of the Santa Cruz Mountains dominate this 1991 landscape, defined by sharp elevations and a network of deep gulches. Following the high crest along Skyline Boulevard, the map traces the boundary between Santa Clara and Santa Cruz counties. The area is notable for its numerous named outcrops, including Goat Rock, Summit Rock, and Castle Rock, which served as landmarks long before the establishment of modern park boundaries. To the northeast, the terrain descends toward Saratoga and Monte Sereno, where the grounds of Villa Montalvo Arboretum sit near the edge of the urbanized valley.

Water management and local history are reflected in features like the Lake Ranch Reservoir and the rural Lakeside Sch near Lexington Res. The interior remains largely undeveloped, characterized by remote points such as Uncle Billys Cabin and the steep Beatty Slide, showing the persistence of the region's wild character despite its proximity to the growing Silicon Valley suburbs of the late twentieth century.