Devil's Kettle Falls
The Brule River goes about its usual river business winding through Minnesota, but while traveling through Judge C. R. Magney State Park, it takes a very, very strange turn. Over the course of 8 miles, the river drops 800 feet in elevation forming several waterfalls along the way. At one point, a large jutting rock formation splits the river, resulting in two waterfalls. One side does the typical waterfall thing, but the other side falls into a hole known as the Devil's Kettle. And then, it just completely disappears, a mystery that has been baffling visitors and scientists for ages. Common sense would suggest that the water reappears somewhere in nearby Lake Superior, but researchers have tried every trick to locate the missing water — including dying the water and adding ping pong balls — to no avail. Read more about the curious case of the missing river at: The mystery of Devil's Kettle Falls.