X-Nico

2 unusual facts about Lake Chicago


Lake Chicago

Blue Island, Illinois, and Stony Island were, literally, islands left behind as Lake Chicago's water level fell.

Evidence of these seas are found in the fossils of coral, such as those unearthed in Illinois quarries at Stony Island Avenue, Thornton and McCook Avenues, or at 18th Street and Damen Avenue, all in Chicago.



see also