Dan LeFebvre @danlefeb.com · Jul 17 Panorama from on top of Monk's Mound, the largest Pre-Columbian earthwork in the Americas and the largest pyramid north of Mesoamerica.
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Monk's Mound dates back to around 900 CE and is positioned along the Mississippi River which was used as a vital part of trade. In the distance, you can see a more modern civilization along the Mississippi River which used the same waterway for trade. We know it at St. Louis.