Redwood National Park
Redwood National Park is a recognized dark sky location in California for stargazing and astronomy activities.
Type
As a U.S. national park, various camping options may be available, including frontcountry, dispersed (boondocking), and backcountry (backpacking/primitive). A permit may be/is required.
UNESCO
Redwood National Park is also a UNESCO site.
For more info, see their website. See also all dark sky places in CA.