Niagara Escarpment  search
BTNorth America
 .Niagara Escarpment
RTOntario
 Iowa
 Illinois
 Wisconsin
 New York
 Michigan
 Bruce Peninsula
 Great Lakes region
 Manitoulin Island
 Niagara Falls
SNCuesta of Paleozoic rocks sloping away from the Canadian Shield, extending from central New York to N of Lake Huron and Lake Michigan, continuing southwestward into Wisconsin, Illinois, and Iowa. Indexed with states and province as applicable.