(lively music) (upbeat rock music) - Agates were formed a billion years ago when Minnesota was under a lot of volcanoes, all the way up to Lake Superior down to Mille Lacs, and then they were ...

So what are these rocks and how did they wind up in the Midwest? 27 News spoke with Tony Layzell, an assistant scientist with ...

ALGER COUNTY, MI --Not many job perks include sunrises over Lake Superior or Great Lake shipwrecks in your backyard − but this one does. The Pictured Rocks National Lakeshore is looking for ...