Mystery over natural phenomenon at Minnesota waterfall finally solved

The north shore of Lake Superior in Minnesota features inspiring vistas of jagged rock and tumbling waterfalls.But one scene in particular has mystified visitors and scientists for decades: Devil’s Kettle, a waterfall located in Judge C.R. Magney State Park.Water in the left fork of the waterfall in Brule River appears to simply vanish into a large hole in the rock below, according to CBS Minnesota, which previously looked into the mystery in 2012. Some believe that the water flows undergr