Before revision: In another case, the term pothole is used to refer to a shallow depression, generally less than 40 000 m2 in area that occurs between dunes or on subdued morainic relief on a prairie, as in Minnesota and the Dakotas, and often contains an intermittent pond or marsh that serves as a nesting place for waterfowl.
After revision: In another case, the term pothole is used to refer to a shallow depression, generally less than in area that occurs between dunes or on subdued morainic relief on a prairie, as in Minnesota and the Dakotas, and often contains an intermittent pond or marsh that serves as a nesting place for waterfowl.