Wind Cave National Park is an American national park located 10 miles north of the town of Hot Springs in western South Dakota. Established on January 3, 1903 by President Theodore Roosevelt, it was the sixth national park in the U.S. and the first cave to be designated a national park anywhere in the world. The cave is notable for its calcite formations known as box work, as well as its frostwork. Approximately 95 percent of the world's discovered box work formations are found in Wind Cave.