Topic: Mound City

St. Louis, formerly known as "Mound City," is highlighted for its extensive network of ancient mounds and subterranean connections to Cahokia. During the construction of a bridge over the Mississippi River, workers reportedly blasted into a tunnel containing ornate stone, inscriptions, and murals. These tunnels are theorized to connect various mound complexes, serving as vaults or entrances to a vast underground habitation system used by an advanced prehistoric race.