Millersylvania State Park is a public recreation area located on Deep Lake eight miles (13 km) south of Olympia, Washington.

Remnants of a narrow-gauge railway, 19th-century skid roads, and other reminders of the logging industry can be found on park grounds, including tree stumps bearing the scars of springboards used by loggers.

In a visit by the Washington State Parks and Recreation Commission superintendent at the time, William G. Weigle, he found the presence of Black men, "unfortunate".

A separate beach, intentionally meant as a form of segregation, was ordered so that Black enrollees could bath in a manner preventing them from coming into contact with park visitors.

[6] The park is situated in an old-growth forest and offers camping, 16 miles (26 km) of hiking and biking trails, boating, and fishing.