< Dark parks in CA
Mendocino National Forest
Mendocino National Forest is a recognized dark sky location in California for stargazing and astronomy activities.
Bortle class
Mendocino National Forest is rated Bortle Class 2.
Type
As a U.S. national forest, dispersed camping, also known as boondocking, is permitted away from car/RV campsites. This allows you to find even darker skies. A permit may be required.
OHV trails
Off-road vehicle trails and camping are also permitted for ATVs, dirt bikes and other OHVs (off-highway vehicles). A permit is required.
For more info, see their website. See also all dark sky places in CA.