These potholes are the result of glacier activity in the Wisconsin glaciation, which ended about 10,000 years ago. The decaying ice sheet left behind depressions formed by the uneven deposition of till in ground moraines. These depressions are called potholes, glacial potholes, kettles, or kettle lakes.
These depressions are a result of glacial activity during the Wisconsin glaciation, which ended about 10,000 years ago. The depressions are known as potholes, glacial potholes, kettles, or kettle lakes because they were formed by uneven till deposition in ground moraines left behind after the ice sheet melted.