Hope Island State Park (Mason) in Mason County, Washington is a marine camping park in the Washington State Park System. It consists of 106 acres (43 ha) old-growth forest and salt marsh with a 1.5 miles (2.4 km) beach on Puget Sound. The island is reachable only by boat. Available activities include hiking, fishing, clamming, beachcombing, and birdwatching. The park is administered as a satellite of Jarrell Cove State Park.
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Coordinates: 47°11′14″N 122°55′44″W / 47.187318°N 122.928755°W