Forget Petoskey rocks - what you really need to be looking for in Michigan are Yooperlites - rocks found on the shores of Lake Superior that glow under a black light. Don't know where or how to find them? Good news - according to, a guy named Erik Rintamak will take you right to them.

Erik first found what he calls Yooperlites (which geologists call soadlites), in June of 2017. He knows where to find them and he's got the UV flashlights you need to find them. His next tours will be at Muskallonge State Park (in the U.P., between Grand Marais and Whitefish Point) on Sept. 8 and Sept. 9. Good hunting! Send photos!


Banana Don and Stephanie McCoy amuse and thrill you every weekday morning from 5:30 – 10AM on the radio at 100.7 WITL.

Noted zythologist and all-around fun guy Banana Don can be reached via email at and on Twitter @WITLFM. Also, Facebook friend Banana Don and Stephanie at and
Plus – check out the new WITL app. It’s much better than any other app – ever.

More From 100.7 WITL