<P> The Redwood National and State Parks ( RNSP ) are a complex of several state and national parks located in the United States , along the coast of northern California . 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 ( 560 km ) , and feature old - growth temperate rainforests . Located entirely 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 ( 157.75 km ) . These trees are the tallest 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 . </P>
where are the giant redwoods located in california
the coast of northern California