Occurrence of Attributes in Original Text
The text related to the cultural heritage 'Cahokia Mounds State Historic Site' has mentioned 'Soil' in the following places:
| Occurrence Sentence | Text Source |
|---|---|
| Researchers originally thought the flat, open terrain in this area reflected Cahokia's location on the Mississippi's alluvial flood plain, but instead soil studies have shown that the landscape was originally undulating ridge and swale topography. | WIKI |