Petroglyphs east of the Mississippi River in Illinois.
From Wikipedia: Archaeologists believe that petroglyphs found at Fountain Bluff were carved sometime between 1000 and 1250 AD.
Relatively easy to find on decent roads.
In 1953 this photo was taken.
Peithmann, I. (1955). A Petroglyph Site at Fountain Bluff, Jackson County, Illinois. Central States Archaeological Journal, 11-13. URL https://www.jstor.org/stable/43140611
Here is mine taken today.
More from 1953 survey.
and same view today.
Remember to take only photos, leave nothing but footprints and waste nothing but time.
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