|Image Name||Width x Height||Size|
|SIA3756.jpg||452 x 640||109K|
|SIA3756.jpg||847 x 1200||348K|
|SIA3756.jpg||3619 x 5125||4M|
This is a digitally modified image from "Ancient Monuments of the Mississippi Valley" in the "Smithsonian Contributions to Knowledge", Volume 1. In order to better show the features it has been colored and a distance marker has been added.