Monument Older Than Stonehenge Found in Lake Michigan

You won't believe this, but divers found something wild at the bottom of Lake Michigan—a stone circle that's older than Stonehenge. Yep, apparently the Midwest has been holding onto ancient secrets this whole time. It was discovered by accident while researchers were scanning the lake floor for shipwrecks (plot twist!). The stones are arranged in a circle, and one even has what looks like a carving of a mastodon on it. No one's 100% sure who built it or why, but it's clear it dates way back. Makes you wonder what else is hiding under those Great Lakes, right? Learn more about your ad choices. Visit megaphone.fm/adchoices