Recreation Map of Black Diamond Open Space in King County in Washington. Published by King County, Washington.
Black Diamond Open Space is a 1,240-acre park located between the cities of Maple Valley and Black Diamond in King County. It is a multi-use King County park managed as three geographic units: north, southwest and southeast units. This map brochure covers the north unit as it is the largest and most publicly used portion of Black Diamond Open Space. The park is forested with several high-quality bogs and wetlands that provide good habitat for wildlife. In 2015, Evergreen Mountain Bike Alliance, the Black Diamond Trails Coalition and King County Parks built a new 10 mile trail network.
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kingcounty.gov, May 2019