Wonderland Cave is located near Sturgis in the beautiful town of Nemo, South Dakota. Although Indians knew of the cave for a thousand years earlier, white settlers didn’t discover it until 1880. It was referred to as “Nameless Cave” for years prior to acquiring its current moniker. As of today, the end of the cave hasn’t yet been discovered, a fact that infuses Wonderland with a sense of mystery.
Since opening to the public in 1929, millions of tourists have visited Wonderland Cave. This impressive natural phenomenon has the largest variety of cave formations in the Midwest—in fact, a tour of Wonderland will include nearly every variety of cave formation in the Black Hills region. Eighty percent of the walls and ceilings of Wonderland Cave are coated with stalactites, flowstone, popcorn crystal, and helectites. A popular attraction is the extremely rare formation known as the Birdbaths. Other striking features of Wonderland Cave are its 40-foot stalactite wall, and a reflecting pool beneath a ceiling dripping with white crystals.
Wonderland Cave has an onsite rock shop, a large gift shop, walking trails, and a full-service restaurant. Cave tours are offered May through October. Comfortable shoes and a light jacket are recommended for the 40-minute tour—the temperatures within the cave remain a consistently cool 49 degrees Fahrenheit throughout the year. Cave tours include a guided ½-mile nature trail that explores a carefully simulated Indian village and petrified gardens.