pinnacles national park with bear gulch trail and steep cliffs, central california, usa

america american andreas backcountry bear boulders breccia california canyon cave caves central cliffs creek desert entrance environment erosion fault formations fracture gabilan gulch hike hiking landscape line meanders monolith monument moses narrow national natural nature north open outdoor outdoors park path pinnacles range recreation rim rock rocks rugged sheer spring states system talus tectonics trail travel tuff united usa volcanic volcanism west western wild wilderness steep located usa