Castle Rock State Park is located three miles south of Oregon on Highway 2. The 2,000-acre park includes rock formations, ravines, and unique northern plant associations. In one valley, 27 different types of ferns have been identified. A sandstone bluff, adjacent to the river, has given the park its name. Picnic area amenities include tables, shelters, grills, toilets, drinking water and playground equipment. Six miles of marked hiking trails have been developed, and a public boat ramp/parking facility is located across from the park's main entrance.