Lassen Volcanic National Park
Lassen Volcanic National Park is a recognized dark sky location in California for stargazing and astronomy activities.
Bortle
Lassen Volcanic National Park is rated BORTLE CLASS 1.
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.
For more info, see their website. See also all dark sky places in CA.