A place of natural beauty, one of the Bay Area's overlooked treasures.
The park has excellent spots for high altitude alpine hiking, backpacking and rock climbing as well as ample opportunity for spotting wildlife.
An enormous collection of weirdly-shaped rock pinnacles, remnants of a huge volcanic eruption about 25 million years ago, cover the higher regions of the park.
Offering rugged hiking trails, it protects a wilderness area containing the remains of half of a long-extinct volcano.
