Six Rivers National Forest occupies more than one million acres in northwestern California, with rugged mountains, river canyons, coastal-influenced woodland, and about 137,000 acres of old-growth forest. Created on June 3, 1947, by combining parts of the Klamath, Siskiyou, and Trinity National Forests, it is named for the Eel, Van Duzen, Klamath, Trinity, Mad, and Smith rivers. The forest includes wild and scenic rivers, wilderness areas, botanical areas, and recreation opportunities such as camping, hiking, and fishing. It has also been tied to notable cultural and legal episodes, including the Patterson-Gimlin film and the 1988 U.S. Supreme Court case Lyng v. Northwest Indian Cemetery Protective Association.