Oregon Caves National Monument and Preserve is a protected area in the northern Siskiyou Mountains of southwestern Oregon in the United States. The 4,554-acre park, including the marble cave, is 20 miles east of Cave Junction, on Oregon Route 46. The protected area, managed by the National Park Service, is in southwestern Josephine County, near the Oregon–California border. Elijah Davidson, a resident of nearby Williams, discovered the cave in 1874.