Most people do their rock hunting during the day, but you can't find "Yooperlites" until the sun goes down. Yooperlites are rocks that fluoresce in the dark under ultraviolet light. They became known ...

In a recent study, geologists say Michigan is home to the oldest known rock in the nation. Watersmeet gneiss is found in Michigan's Upper Peninsula. Minnesota's Morton gneiss previously held the title ...

MUNISING, MI -- The changing seasons open up a window for funky fungi to take hold as trees decay and new life blooms on the fallen trunks. In the Upper Peninsula, park rangers at Pictured Rocks ...

Isle Royale National Park, a remote island in northwestern Lake Superior, will reopen for the season April 16, 2025. Here's ...

Yooperlites are rocks that fluoresce under UV light. The best time to search for Yooperlites is after a storm, when waves may have unearthed new rocks along the shores of Lake Superior. Rock hunters ...