1k year old 3 sisters crop farm found in Northern Michigan

https://www.smithsonianmag.com/smart-news/massive-field-where-native-american-farmers-grew-corn-beans-and-squash-1000-years-ago-discovered-in-michigan-180986758/

#HackerNews #1kYearOldFarm #NorthernMichigan #NativeAmericanHistory #AgricultureHistory #CropFarming #ArchaeologicalDiscovery