5. WIND CAVE NATIONAL PARK Deep beneath the vast expanse of the golden, windswept prairie in western South Dakota is the seventh-longest cave in the world and one of the most complex cave systems. Wind Cave has long been considered a sacred place for Native Americans. In 1903, President Theodore Roosevelt signed the bill that created Wind Cave National Park, the first cave in the world to be designated as a national park. Above ground, explore more than 30 miles of hiking trails offering ample opportunities to spot bison, elk and more than 100 species of birds. Then, learn about the geologic history of the area on the National Park Service's self-guided Geologic Driving Tour. More on page 100. Don't Miss After advocates brought attention to the fact that only about 1,000 bison existed in the U.S., Wind Cave received 14 of the animals from the New York Zoological Society in 1913. Today, some 500 bison roam the park, favoring prairie dog towns and fresh burn sites for their short grasses. Chat with a ranger upon your arrival to learn of the herd’s latest whereabouts. Nearby Towns: Hot Springs (7 miles); Custer (18 miles) When it comes to hiking trails, Wind Cave National Park Ranger Tom Ferrell recommends Rankin Ridge. The 1-mile loop "goes to the highest point in the park with great views. While the fire tower is closed, the view from the base is wonderful, especially at dawn or sunset," Ferrell says. adventure TravelSouthDakota.com // 5 9