Tweet Alum Rock Park Address: 16260 Penitencia Creek Rd San Jose, CA 95127 Contact: Phone: (408)259-5477 Website: Click to Visit Geocode: 37.3985250, -121.8055810 Location Tools: Local Weather Driving Directions Event Calendar More... Saturday, 09/26/26 11:00 AM - 12:30 PMSecrets of Alum Rock: A Geology & Nature Hike
