Boysen State Park
Boysen State Park is a recognized dark sky location in Wyoming for stargazing and astronomy activities.
Bortle
Boysen State Park is rated BORTLE CLASS 2.
Type
As a U.S. state park, various camping options may be available, including frontcountry camping, dispersed camping (boondocking), and backcountry (backpacking/primitive) camping. Also, electric bicycles are allowed on all trails (motorized and non-motorized). A permit may be required.
For more info, see their website. See also all dark sky places in WY.