The Monona Mound

Historical marker location:

4009 Monona Dr, Monona, Wisconsin

( Marker can be reached from Monona Drive, 0.1 miles south of Cottage Grove Road, on the right when traveling south.)

Marker installed: 2019

The deadliest tornado in Wisconsin's history occurred on May 18, 1883, when a tornado swept through the town of Rochester, killing 117 people and injuring more than 200 others.