Low clouds sweep across the granite pinnacles of the Cathedral Spires in the Black Hills of South Dakota, wrapping the rugged landscape in drifting fog just after dawn. These towering formations—some rising more than 5,000 feet above sea level—are part of the Needles range within Custer State Park, a region shaped by millions of years of erosion and uplift. The rock spires, composed primarily of Harney Peak granite, are a hallmark of the park’s dramatic geology and a favorite destination for climbers and photographers. On mornings like this, the fog often settles in the valleys below, creating a fleeting illusion of islands floating above the forest, while the peaks catch the first light breaking through the storm-heavy sky.