Kettle (landform)
The Kettle Moraine, a region of Wisconsin covering an area from Green Bay at Lake Michigan to south-central Wisconsin, has numerous kettles, moraines and other glacial features. It has many kettle lakes, some of which are 100 to  deep. Kettle Point, Ontario, Canada, has rock concretions (where sediment naturally cements into hard masses) locally named 'kettles', but there are no kettle lakes in this region.