That time I rolled my eyes at the whole 'shifting rivers' theory about ancient cities
I remember reading about how they think the Mississippi River used to flow right past those old Cahokia mounds back around 1100 AD and I thought yeah sure, another wild theory. But then I actually drove out there to the site near Collinsville, Illinois last fall and walked around. The ground is lower in certain spots and you can really see where a channel might have cut through. The park ranger showed me these core samples they pulled up from the ground with layers of sand and silt that only come from a big river. I guess after seeing that and the fact that no major river runs there today, it finally clicked. Kind of wild to think those people built a whole city right on a river that just up and moved on them. Has anyone else been to a site where they changed your mind just by seeing the physical evidence in person?