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Sierra Azul Open Space Preserve 1
Mountain Spot
Sierra Azul Open Space Preserve 2
Sierra Azul Open Space Preserve 3
Sierra Azul Open Space Preserve 4
Sierra Azul Open Space Preserve 5

Sierra Azul Open Space Preserve

San Jose

Climb through shaded oak groves to Mount Umunhum's summit, where a Cold War-era radar tower stands watch over sweeping Bay Area views and a Native American ceremonial circle honors the peak's Indigenous heritage.

Shaded forest trails
Panoramic summit views
Cold War history site
Indigenous cultural significance

Tips

🏔️"views from the Ocean, Santa Cruz, to Silicon Valley and Mt. Hamilton!"
🪨visit the ceremonial circle created with Amah Mutsun Tribal Band
🦁mountain lions spotted at dusk — hike in groups, make noise

Sierra Azul Open Space Preserve

Mt Umunhum Rd, San Jose, CA 95120, USA