The western lobe formed Green Bay, Lake Winnebago and the Horicon Marsh.

[1] The moraine is dotted with kettles caused by buried glacial ice that calved off the terminus of a receding glacier and got entirely or partly buried in glacial sediment and subsequently melted.

This process left depressions ranging from small ponds to large lakes and enclosed valleys.

Kames are also found in the Kettle Moraine area, and are mounds of compressed glacial till.

[2][3] Outdoor recreation opportunities include hiking, biking, cross-country skiing, snowshoeing, horseback riding, and snowmobiling.