Phelim O'Toole

Historical marker location:

20 S 4th St, Saint Louis, Missouri

( Marker is at the intersection of South 4th Street and Walnut Street, on the left when traveling north on South 4th Street.)

The state of Missouri is home to several unique natural landmarks, including the Elephant Rocks State Park, which features giant granite boulders that resemble a herd of elephants, and the Ha Ha Tonka State Park, which has natural bridges, caves, and a castle ruin.