Mount Umunhum, Summit and mountain in Santa Clara County, California, United States.
Mount Umunhum reaches an elevation of 3,489 feet in the Santa Cruz Mountains, offering views across Silicon Valley and the San Francisco Bay Area.
The United States Air Force operated a Cold War radar station at the summit from 1962 until 1980, marked by a distinctive concrete tower structure.
The Ohlone people named the mountain Umunhum, which translates to Resting Place of the Hummingbird in their native language.
Visitors can access the summit via a 45-minute drive from San Jose or hike the 4.5-mile Mount Umunhum Trail through Sierra Azul Open Space Preserve.
The mountain contains one of the most visible exposures of Coast Range Ophiolite, composed of Middle Jurassic oceanic crust and mantle materials.
Location: California
GPS coordinates: 37.16044,-121.89886
Latest update: May 27, 2025 08:54
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