 Similar potholes are encountered in riverbeds and the Channeled Scablands scoured by glacial outburst floods.The GletscherGarten of Lucerne (Switzerland) is famous for its giant's kettles, having 32 in number, the largest being wide and deep.They are also common in Germany, Norway ("jettegryte"), Sweden ("jättegryta"), Finland ("hiidenkirnu"; hiisi's churn), and Moss Island in the United States.