Concept
Version 8
Created by Boundless
Woodlands in the East
Monks Mound
The concrete staircase is modern, but it is built along the approximate course of the original wooden stairs. Collinsville, IL.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"640px-Monks_Mound_in_July.jpeg."
https://commons.wikimedia.org/w/index.php?curid=3019271
Wikimedia Commons
CC BY-SA 3.0.