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 Blue State Park Mount Blue State Park Mount Blue State Park is a public recreation area covering in the town of Weld, Franklin County, Maine. The state park's bifurcated land includes acreage on the west shore of Webb Lake as well as Mount Blue and other peaks to the east of the lake. The park is connected by road with the Tumbledown Public Lands, the site of Little Jackson Mountain, Tumbledown Mountain, and Tumbledown Pond, an alpine lake near the top of Tumbledown and Little Jackson mountains. The park and public lands are managed by the Maine Department of Agriculture, Conservation and Forestry.