风穴国家公园，位于美国南达科塔州的国家公园，一直被印地安人视为圣地的巨大地下洞穴。。

1903年由总统希尔多‧罗斯福签暑成立，为第七个美国国家公园，同时也是世界上第一个为保护洞穴而成立的国家公园。总计长度219.76公里，风洞是目前已知第五长的洞窟，而且每年还有更多新发现的地下系统继续被测量中。风洞国家公园的特色也不仅止于地底下，因为在地表上风洞同时保存了一部分的北美大草原。在这片草原生态中，常见的动物包括美洲野牛及叉角羚。

Wind Cave National Park is a United States national park 10 miles (16 km) north of the town of Hot Springs in western South Dakota. Established in 1903 by President Theodore Roosevelt, it was the seventh U.S. National Park and the first cave to be designated a national park anywhere in the world. The cave is notable for its displays of the calcite formation known as boxwork. Approximately 95 percent of the world's discovered boxwork formations are found in Wind Cave. Wind Cave is also known for its frostwork. The cave is also considered a three-dimensional maze cave, recognized as the densest (most passage volume per cubic mile) cave system in the world. The cave is currently the sixth-longest in the world with 140.47 miles (226.06 km) of explored cave passageways, with an average of four new miles of cave being discovered each year. Above ground, the park includes the largest remaining natural mixed-grass prairie in the United States.