Chicago's Winnebago Hopewell Serpent and Lizard Mounds
The map shows the locations of both a Serpent Mound that was swallowing an egg and a Lizard Mound In Chicago, Illinois. The effigy at Oakdale and Sheffield was described as both a Serpent and a Lizard. The effigy at Thatcher Woods should be still visible.
A possible Hopewellian earthwork in what is now downtown Chicago, the serpent mound [called lizard mound by Albert F. Scharf], was formerly a prominent feature in the landscape, but is now covered by the Belmont elevated station near the intersection of Sheffield and Oakdale avenues; another possible work was the Chicago Pyramid Mound at Cheltenham