Spike K.
10/4/2025
Did the Mt Umunhum trail. Mostly shaded. Free parking. Great views. Some historical stuff (WW2 radar builing and Native American religious site) at the top which is a nice reward making it to...
Sierra Azul Open Space Preserve
Open
(38)
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Kennedy Rd
Los Gatos, CA 95032
Sierra Azul Open Space Preserve is a vast wilderness area in the Santa Cruz Mountains, encompassing over 19,000 acres of diverse landscapes, including grasslands, chaparral, and oak woodlands. The preserve features 26 miles of multiuse trails, offering opportunities for hiking, biking, and horseback riding while providing critical habitat for local wildlife such as mountain lions, deer, and bobcats.
Within the preserve is the prominent Mount Umunhum, standing at 3,486 feet, which offers stunning views and is steeped in historical significance, from Native American heritage to its days as an Air Force radar station. Visitors can experience the rich cultural history and natural beauty of the area while enjoying carefully maintained trails and habitats that celebrate the region's ecological diversity.
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Reviews
4.038 reviews
Anusha S.
6/18/2025
Came here for a hike on the Sunday of Memorial Day weekend! Arrived at the Bald Mountain parking lot around 8:30am and there were lots of spots still available. I went on the Mount Umunhum out...
Fulbio D.
12/23/2024
Great view, cycling is recomended! No e-Bikes beautiful place to ride your bike restrooms available
Chris L.
10/24/2020
"Please give guided tours to the radar station!" I wanted to check out the new trail to Mount Umunhum. Therefore, I parked at the Bald Mountain parking area. I think I got just about the last...
Nohemy C.
5/9/2020
Open during Covid-19! After years of having this place bookmarked on yelp, I finally had the chance to experience it today. Came on a Saturday mid-morning (arrived at 10 am) and had to drive...
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