SIOUX FALLS, S.D. (KELO) — More than six years after a large sinkhole opened up in western KELOLAND, the South Dakota Supreme Court has reached a decision. Homeowners in the neighborhood, which was previously used for mining, sued the state after the sinkhole appeared. Underneath the Hideaway Hills neighborhood in Black Hawk is a gypsum mine that was last used in the 1940’s. Decades later, and after many changes in ownership, a sinkhole claimed one homeowner’s yard and a portion of the street.