Rushmore Cave 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 1876 when a log flume that supplied water to mining operations in town of Hayward broke and spilled onto the side of the hill. As the water flowed down the hill it started flowing into a small hole in the hillside. The local miners who went up to fix the flume noticed this abnormality and
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