Rushmore Cave into a rock known as limestone. The cave has a cornucopia of rooms including the Entrance Room, Post Office, Image Room, Big Room, Fairyland, Rope Room, Geode Room, The Rouge Room (Party Room), Arrowhead Room, and the Floral Room. The cave also includes boxwork and many dripstone formations including stalactites, stalagmites, columns, helictites and flowstone. Rushmore Cave Rushmore Cave is the closest show cave to Mount Rushmore National Memorial in the United States. It contains a wide variety of natural formations. It is the ninth longest cave in South Dakota. It measures a distance of . It was discovered in
Mount Spokane State Park Mount Spokane State Park Mount Spokane State Park is a public recreation area located in the Selkirk Mountains, northeast of the city of Spokane, Washington. The state park surrounds Mount Spokane and other peaks including Mount Kit Carson, Beauty Mountain, and Quartz Mountain. The park receives of snow annually and is home to Mount Spokane Ski and Snowboard Park as well as an extensive system of trails for hiking, biking, and horseback riding. As of 2018, Washington State Parks reported its acreage as , making it Washington's largest state park, slightly ahead of Riverside State Park () which lies 23