Dunbar Cave State Park in Clarksville, Tennessee, protects a 110-acre karst landscape centered on an 8.067-mile cave system with evidence of human use stretching back to the Paleo Indian period. Archaeological finds and more than 30 Mississippian drawings and etchings, including religious imagery, show the cave’s long importance as a Native American spiritual site. The property later figured in an early land dispute, was mined for saltpeter during the Mexican–American War, and developed into a resort and entertainment destination from the 19th into the 20th century. Since Tennessee acquired it in 1973, it has been preserved as both a natural area and a place of deep cultural history.