40 Massive Holes Found At Bottom Of Lake Michigan, Scientists Baffled
DETROIT - Plenty of secrets hide under Lake Michigan's waters, including a 9,000-year-old 'Stonehenge.' Now, scientists have found something else that's raised plenty of questions among geologists. Around 40 massive depressions were found beneath Lake Michigan's surface; what are they, and how did they form? Researchers from the National Oceanic and Atmospheric Administration's (NOAA) Great









