Comprising Redwood National Park (established 1968) and California's Del Norte Coast, Jedediah Smith, and Prairie Creek Redwoods State Parks (dating from the 1920s), the combined RNSP contain 139,000 acres, and feature old-growth temperate rainforests. Located within Del Norte and Humboldt Counties, the four parks, together, protect 45% of all remaining coast redwood (Sequoia sempervirens) old-growth forests, totaling at least 38,982 acres. These trees are the tallest, among the oldest, and one of the most massive tree species on Earth. In addition to the redwood forests, the parks preserve other indigenous flora, fauna, grassland prairie, cultural resources, portions of rivers and other streams, and 37 miles (60 km) of pristine coastline. Scenes set on the forest moon Endor in Star Wars Episode VI: Return of the Jedi were filmed on private logging company land that was shortly thereafter clearcut near the town of Smith River, California north of the park and, south of the park, the speeder chase scene at the Chetham Grove section of Grizzly Creek Redwoods State Park. Scenes for The Lost World: Jurassic Park as well as the movie Outbreak were filmed at the nearby Prairie Creek Redwoods State Park and Patrick's Point State Park.