Photo: National Park Service
The state’s tallest sand dune will stay closed to the public indefinitely as investigations continue into the recent discovery of dangerous holes.
Mount Baldy at Indiana Dunes National Lakeshore was closed after a young boy was trapped under 11 feet of sand there last July. He was rescued a few hours later and has since recovered.
An investigation headed by the Environmental Protection Agency and the National Park Service has led to the discovery of three additional holes in the dune.
Indiana Dunes National Lakeshore spokesman Bruce Rowe says there are theories but still no answer to what exactly is causing the holes.
“This is literally new to not only the park service, but to geologists,” Rowe said. “Matter of fact, when this first happened, one of the leading geologists on coastal dunes said if they hadn’t heard it had happened, they would have said that it was impossible. So really, it’s brand-new science that’s being discovered as they do this study.”
A more extensive study with experts from Indiana University, the Indiana Geological Association, and Lakeshore park staff is being planned for the summer.