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 Grace State Forest third tower to have been constructed on Mount Grace. Forest trails used for hiking, horseback riding, mountain biking, and cross-country skiing include a portion of the long-distance Metacomet-Monadnock Trail. The forest also offers picnicking and restricted hunting. Mount Grace State Forest Mount Grace State Forest is a publicly owned forest with recreational features located in the town of Warwick. The state forest centers around Mount Grace, which at is the third highest point in Massachusetts east of the Connecticut River after Mount Wachusett and Mount Watatic. It is bordered by portions of Warwick State Forest to the east and west