Redwood National and State Parks (RNSP) is not "pristine". 20th century industrial logging had disastrous(灾难性的) impacts on the forests, rivers, and wildlife of the area. Because of the extent of the damage - and the ripple effects it continues to have on these ecosystems - these logged habitats are not able to restore themselves. For decades park managers and partners have been at work reversing many of those impacts. But our landscape-scale restoration is very costly, is far from complete, and takes time. Since the 1978 Redwood Expansion Act, ecological restoration has been the primary resource management goal of Redwood National Park. This role grew in 2002 when the Save the Redwoods League purchased lands in Mill Creek and donated it to Del Norte Coast Redwoods State Park. All these parks' lands were purchased from logging companies and private land-owners. Our restoration habitats range from prairies, coast-lines, waterways, hillsides, and forests. Whether it's dune restoration , removing invasive plants , thinning second-growth forests , stopping old logging roads from catastrophic failure , rebuilding rivers, mapping forests , or removing legacy logging roads entirely - these restoration efforts take time, partnerships, skills, science, and money to achieve. The three California State Parks in our partnership (Jedediah Smith Redwoods, Del Norte Coast Redwoods and Prairie Creek Redwoods) were established in the 1920s and 1930s. The land for these state parks came from citizen groups like Save the Redwoods League and the state government that purchased sections of old-growth forests from private logging companies. These pockets of preserved forests were an oasis of protected land during the next half century of logging.