Prince William Forest Park
Prince William Forest Park is the largest protected example of Piedmont forest in the National Park System. The ~15,000 acre park in northern VA also protects the Quantico Creek watershed, and is a sanctuary for numerous native plant and animal species. Because the park includes two physiographic provinces (Piedmont and Coastal Plain) and lies in the transition zone between northern and southern climates, it has a wide range of vegetative communities, including rare seepage swamp habitat and remote stands of old-growth eastern hemlock. Major threats to park resources include adjacent land development, noise pollution, and the introduction of invasive species and disease.