Enter a world that began forming 60 million years ago under what used to be an inland sea. You’ll see numerous formations including boxwork, stalactites, stalagmites, columns, several varieties of crystals, and even helictites. What makes Wonderland Cave special is not only its variety of formations but its history.
Some believe all caves within the Black Hills are connected by undiscovered passageways within the Paha Sapa Limestone formation. The word Paha Sapa was a name given by the Lakota people, which can loosely be translated to “hills that are black.” These hills were sacred to the Lakota, who inhabited the region for thousands of years and knew of Wonderland Cave’s existence before exploration started in 1929.