Mystery Bay State Park

Mystery Bay Marine State Park
Location in the state of Washington
Mystery Bay State Park (Washington (state))
Mystery Bay State Park (the United States)
LocationJefferson, Washington, United States
Coordinates48°03′32″N 122°41′40″W / 48.05889°N 122.69444°W / 48.05889; -122.69444
Area18 acres (7.3 ha)
Elevation16 ft (4.9 m)
Established1972
OperatorWashington State Parks and Recreation Commission
WebsiteMystery Bay Marine State Park

Mystery Bay State Park is an eighteen-acre (7.3 ha) Washington marine state park on Mystery Bay, a small inlet off Scow Bay/Kilisut Harbor on the western side of Marrowstone Island. The park is located approximately one-half mile north of the Nordland General Store (which also faces Mystery Bay) on Flagler Road (SR 116). Many older wooden sailboats can be swinging at permanent moorage at the park. Park activities include picnicking, shellfish harvesting, fishing, boating, beachcombing, and scuba diving.