Yet another hole appeared at Mount Baldy in the Indiana Dunes this week. Researchers are combing through the sands there to find out just what is causing these mysterious holes, and where exactly they’re coming from. You might remember last summer, a then six-year-old boy was trapped under nearly 11 feet of sand while playing at Mount Baldy. WBEZ reporter Lauren Chooljian visited the Dunes to speak with scientists about what is going on over there. Photo: Flickr/Tom Gill.