The Devil's Kettle is a fmous waterfall located in Grand Marais, MN. on State Highway 61. There is a mysterious waterfall in Judge Magney State Park in Minnesota. Half of the water drops 50 feet into the Brule river; the other half falls into a cauldron and disappears. This stairway is just one of the stairways that runs along the trails in Judge Magney State Park.