57th Illinois Monument

Historical marker location:

Shiloh, Tennessee

( Marker can be reached from Hamburg-Savannah Road, 0.6 miles south of Corinth Road, on the left when traveling south.)

The largest underground lake in the United States is located in Tennessee. The Lost Sea, located in Sweetwater, Tennessee, covers over four acres and is home to a variety of unusual creatures, including blind fish and crayfish.