It's a fire road going up that can be steep, but coming down is a nice descent. Not steep, but very rocky, gotta be on your toes for this one.
How to get there:
Head south on Bernal Road in San Jose. Drive (or ride) up the hill past the golf course. You can park outside the park to save the $4 fee.
Once inside the park take the Hidden Springs fire road (maps are posted) make a right on the Coyote Peak fire road (this is where it can get steep). Get to the top of the hill and make your way to the old radio tower. Right near there, you'll find the path to Rocky Ridge (singletrack).