The beaches at Grand Marais are excellent hunting grounds for the ancient Lake Superior agate, a semi-precious stone made up of concentric circles of microcrystaline quartz reddened by iron. Here’s ...

Craig Prudhomme is a former naturalist and has been involved in planning Moose Lake’s Agate Days weekend for 18 years. Moose Lake is home to the largest agate on record. It weighs 108 pounds. “In 1969 ...

DULUTH — About 1.1 billion years ago here, fissures opened in the surface of the earth, depositing lakes of molten rock near what would eventually be the Twin Ports and Lake Superior. This is ...

Lake Superior is the largest of Michigan’s Great Lakes and sits atop the beautiful Upper Peninsula. It’s a big deal for Michigan’s fishing, tourist, and commercial water industries, and offers plenty ...

For the past 20 years, Jesse Lofgren has slowly amassed a collection of Lake Superior agates. But when he returned from a monthlong business trip earlier this week, Lofgren discovered that $60,000 ...